random/accidental/casual.导航词义：偶然的

1. random:adj. 随机的，随意的.指无计划或目的地选择或发生的。

a random sample of 100 families

随机抽样的100个家庭

The survey was conducted based on a random selection of women who were in the shop.

在店内随机选择了一些女性进行了调查。

2. accidental:adj. 意外的，偶然的.指计划外或无意间发生的。

In fact, their meeting was not accidental.

事实上，他们的相遇并不是偶然的。

The company lost its advantages due to an accidental leak of its designs.

由于设计方案意外泄漏，该公司失去了优势。

3. casual:adj. 碰巧的，偶然的.指随意、并无计划的，只作定语。

She first heard of his name in a casual conversation.

她在一次偶然的谈话中第一次听到他的名字。

The professor made some casual remarks about his paper.

教授对他的论文随口点评了几句。

全部

1·The boy was cheeky and casual.

这个男孩嘻皮笑脸、随随便便。《柯林斯英汉双解大词典》

2·She dresses with casual elegance.

她的穿着随意而不失雅致。《牛津词典》

3·The disease is not spread by casual contact.

此病不会通过偶然接触传染。《牛津词典》

4·I was wrong about it being a casual meeting.

我错认为那是一次非正式的会面。《柯林斯英汉双解大词典》

5·We are starting a new line in casual clothes.

我们将着手经营新款式的休闲装。《牛津词典》

6·We were allowed to wear casual dress on Fridays.

我们在星期五可以穿便服。《牛津词典》

7·I also bought some casual clothes for the weekend.

我还买了些休闲服准备周末穿。《柯林斯英汉双解大词典》

8·It was just a casual remark—I wasn't really serious.

我只是随便说说，并不当真。《牛津词典》

9·There is a growing tendency among employers to hire casual staff.

雇主雇用临时职员有增加的趋势。《牛津词典》

10·She had a purposeful air, and it became evident that this was not a casual visit.

她一副志在必得的样子，显然这不是一次随意造访。《柯林斯英汉双解大词典》

休闲的

1·People wear slacks, sweaters, flat shoes, and all manner of casual attire for travel.

人们旅行时穿宽松长裤、运动衫、平底鞋和各式休闲服装。《柯林斯英汉双解大词典》

2·This denim work shirt is as great with a pair of jeans as it is with a tie on casual Fridays.

休闲星期五穿这件丁尼布工作衫配牛仔裤与穿工作衫配领带一样好。《柯林斯英汉双解大词典》

3·Software and content blur together in some of the most lightweight software, like casual games.

在某些最轻量级的软件（例如休闲游戏）中，软件和内容会同时模糊。

4·A spokesman for Royal Doulton admitted that the company has been somewhat slow in catching up with the trend toward casual dining.

皇家道尔顿（Royal Doulton）的一名发言人承认，其公司“一直有点跟不上休闲餐饮潮流”。

5·In many other homes, this china and silver elegance has given way to a stoneware and stainless informality, with dresses assuming an equally casual Friday look.

在其他许多家庭中，这种瓷器和银器的优雅已经让位给石器和不锈钢的随意，着装也同样呈现出周五休闲的样子。

随便

1·Be friendly, but not overly casual or familiar.

要友善，但不要过度随便或套近乎。

2·The whole music thing had been pretty casual from the start.

特纳先生的整个音乐事业从最初都太随便了。

3·How can you transform a casual, but probably uncomfortable, question into a personal positive?

如何将这种随便但又不舒服的问题转变成个人的积极问题呢？

4·A less trendy site, such as a bank's, may consider dashes too casual and avoid them.

一个比较保守的网站，如银行的，就需要考虑破折号过于随便，避免使用。

5·I don't want to look too casual.

我不希望让人看起来很随便。

不经意的

1·What you mean as a casual remark could be misinterpreted.

你不经意所说的话可能会被误解。《柯林斯英汉双解大词典》

2·A casual observer would have taken them to be three men out for an evening stroll.

一位不经意的目击者会认为他们是晚上出来闲逛的3个男人。《柯林斯英汉双解大词典》

3·I had never spoken to her, except for a few casual words, and yet her name was like a summons to all my foolish blood.

除了几句不经意的寒暄，我从来没跟她说过别的话，然而她的名字却能唤起我全部愚蠢的热血。

4·And even the most casual observer knows water is scarce throughout the entire Middle Eastern region.

即使是最不经意的人也能观察到整个中东地区的缺水问题。

5·Although physically they look alike, you can tell them apart by their styles of dress, their distinctive dialects and even their most casual gestures.

尽管他们在身形外貌上非常相似，但是可以通过他们的着装风格、他们与众不同的方言、甚至他们最不经意的动作姿态把他们区别开。

偶然的

1·The disease is not spread by casual contact.

此病不会通过偶然接触传染。《牛津词典》

2·We are the casual acquaintance of a long railway journey.

我们是在火车长途旅行中偶然结识的朋友。《新英汉大辞典》

3·Some of it is about etymology, about the nature of words and their casual links with the elements around us.

有一些故事是关于语源学的，关于语言的本质以及那些词语与我们周围的元素的偶然联系。

4·One day, he had a casual meeting with a pretty girl.

一天，他同一位漂亮女孩有一次偶然的相遇。

5·Yes, that seems to express the rapidity of life, the perpetual waste and repair; all so casual, all so haphazard.

对了，这些比拟可以表达生活的飞快速度，表达那永不休止的消耗和修理；一切都那么偶然，那么碰巧。

临时的

1·There is a growing tendency among employers to hire casual staff.

雇主雇用临时职员有增加的趋势。《牛津词典》

2·You have to consider what the experience is like for casual users who need to work in your environment for a while.

您必须考虑需要在您的环境中工作一段时间的临时用户的体验。

3·Once purchased and trained, this would allow the casual user to save money and time, freeing up precious space in our busy lives to read a good book.

一旦购买并训练好了这样的机器人，临时用户就能节省金钱和时间，从我们的繁忙生活中腾出宝贵的空间来读一本好书。

4·She has to get a casual work to subsist.

她不得不找一个临时工作维持生活。

5·But for a lot of people, the jobs they have been going into have been low-paid, casual and short-term, and often they are back on to benefits very quickly.

她进一步说到 但是 对于大多数人来说 他们能够从事的只是一些低报酬的、临时的和短期的工作 通常他们很快就会重新开始依靠救济金生活.

非正式的

1·I was wrong about it being a casual meeting.

我错认为那是一次非正式的会面。《柯林斯英汉双解大词典》

2·It's a casual party, you know.

你知道这是个非正式的聚会。

3·In casual parlance, a theory is basically an idea or thought.It probably has no carefully collected data to back it up, let alone any rigorous hypothesis testing or experiments.

在非正式说法里，一个“理论”基本上就是一个概念或思想，它可能还没有仔细地收集到支持它的数据，更谈不上有什么严格的假设检验或实验根据。

4·In casual parlance, a theory is basically an idea or thought. It probably has no carefully collected data to back it up, let alone any rigorous hypothesis testing or experiments.

在非正式说法里，一个“理论”基本上就是一个概念或思想，它可能还没有仔细地收集到支持它的数据，更谈不上有什么严格的假设检验或实验根据。

5·A casual survey of big global firms suggests France ought to be able to match Germany's export prowess.

一次对全球大公司的非正式调查表明，法国应该能在出口实力上与德国相抗衡。

漫不经心的

1·His casual attitude toward everything has really put us off.

他对任何事情都漫不经心的态度使我们很反感。

2·THE differences between tiny Rwanda and the rest of Africa are immediately palpable even to the most casual visitor.

哪怕是最漫不经心的游客，也能立马感受到小小的卢旺达和非洲其他地方的不同。

3·Unfortunately the syntax and the context are lost to the casual observer.

不幸的是，漫不经心的观察者会忽略它的语法和上下文。

4·Amazon last week announced sales of ebooks on its US site had outnumbered hardbacks for the first time, stunning casual observers, even if it had not been entirely unexpected in the trade.

上周亚马逊声称其在美国市场售出电子书的数量第一次超越了精装书，这震惊了漫不经心的观察家，但在行业内部这事并不是完全出人意料的。

5·If the casual reader passed over them quickly when they first appeared on the front pages of American newspapers, the missiles are now more than ever firmly embedded in the popular imagination.

如果报道首次出现在美国报纸头版时，漫不经心的读者匆匆略过、未加注意的话，那么现在这几枚导弹却牢牢印在了公众的脑际。

便装

1·She said she envied the casual way we dress for work.

她说她羡慕我们可以穿便装上班。

2·Functional casual, basically: jeans and khakis, an assortment of button-front shirts, some cotton sweaters.

基本上是功能性的便装：牛仔裤，卡奇装，清一色的带纽扣衬衫，还有些棉的套头衫。

3·Of course, we also have other suits, like sports suits for cycling and running, and casual suits we have not shown you yet, but later you will see.

当然，我们还有其他的衣服，比如运动服，骑自行车的、跑步的。还有便装，便装现在还没有展示出来，到一定时候大家就可以看到啦。

4·This is a general overview of appropriate business casual attire .

这是如何得体的穿商业便装的一般观点。

5·The trouble with casual wear is that there are no boundaries to indicate what is and what is not appropriate.

上班着便装的问题在于服装是否得体难以界定。

随随便便

1·The boy was cheeky and casual.

这个男孩嘻皮笑脸、随随便便。《柯林斯英汉双解大词典》

2·It was in this casual way that Wendy one morning made a disquieting revelation.

一天早晨，温迪就是这样随随便便地说出了一件令人不安的事。

3·My father had mentioned him regularly, not as a part of normal conversation but as a casual aside that could come up at any time without warning.

我父亲总是时不时地提到他，不是通常的谈话，而是随随便便，不知什么时候就冒出来一句。

4·The casual success never occurs in the world.

随随便便的成功是不可能发生的。

5·A little sloppy and a little casual are likely to lead to the end of life.

生活中的一点马虎，一点随随便便都有可能导致生命的终结。

(1)casual wear便装，休闲服

(1)casual clothing休闲装；便服

(1)casual pants休闲裤

(1)business casual商务休闲装；商务便装

(1)casual dress便装；休闲服装

(1)casual sex草率性行为；偶暂式性交；随意性交（指随意选择不同对象进行性交活动）