natural/crude/raw/unrefined.导航词义：自然的，天然的

1. natural:adj. 自然的；天然的.指存在或发生于自然界的，含非人力所为之意，也指食物没有添加其他成分的。

the natural world

自然界

natural disasters/resources

自然灾害/资源

This is a natural phenomenon that happens about once a century.

这是一种自然现象，几乎每个世纪都要发生一次。

She cooks with natural ingredients only.

她做饭只用纯天然的佐料。

2. crude:adj. 天然的，未加工的.主要指石油、橡胶等未经化学加工、尚处于自然状态的，只作定语。

Gasoline is made from crude oil.

汽油是从原油中提炼出来的。

They imported crude rubber from Malaysia.

他们从马来西亚进口生胶。

3. raw:adj. 未加工的，天然的.指物质未经加工、依然处于自然状态的。

raw coal/oil/ore/silk

原煤/原油/原矿石/生丝

The factory is in frequent scarcity of raw materials.

这家工厂经常原料不足。

He also imported raw cotton from America in his own ships.

他也用自己的船从美国进口原棉。

4. unrefined:adj. 未精制的，未提炼的.指物质处于天然或未经精炼状态的，通常含有其他杂质。

unrefined lard/sugar/syrup

未提炼的猪油/原糖/未精制的糖浆

全部

1·His hair had a natural curl.

他的头发是自然鬈。《牛津词典》

2·He was not a natural leader.

他并非天生的领袖。《牛津词典》

3·Crying is a natural safety valve.

哭泣是一种自然的释放压力的手段。《柯林斯英汉双解大词典》

4·Water is a fish's natural element.

水是鱼的天然生活环境。《牛津词典》

5·She took to flying like a natural.

她迷上了飞行，仿佛天生就会似的。《牛津词典》

6·She is a natural athlete.

她是个天生的运动健将。《牛津词典》

7·The area has good natural drainage.

这个地区有良好的天然排水系统。《牛津词典》

8·Your brother died of natural causes.

你哥哥是自然死亡。《柯林斯英汉双解大词典》

9·Children are natural exhibitionists.

儿童天生好表现自己。《牛津词典》

10·He's a natural leader.

他天生是个领袖。《牛津词典》

自然

1·Your brother died of natural causes.

你哥哥是自然死亡。《柯林斯英汉双解大词典》

2·His hair had a natural curl.

他的头发是自然鬈。《牛津词典》

3·Crying is a natural safety valve.

哭泣是一种自然的释放压力的手段。《柯林斯英汉双解大词典》

4·Pain acts as a natural defence mechanism.

疼痛算是一种自然防护机制的作用。《牛津词典》

5·Pregnancy is a natural part of womanhood.

怀孕是女子成年期的一个自然部分。《柯林斯英汉双解大词典》

天然

1·The area has good natural drainage.

这个地区有良好的天然排水系统。《牛津词典》

2·Florida oranges have a natural sweetness.

佛罗里达柑桔有一种天然的甜味。《柯林斯英汉双解大词典》

3·The ball is made of rattan – a natural fibre.

这个球是用藤–一种天然纤维制成的。《柯林斯英汉双解大词典》

4·The varnish comes in six natural wood shades.

这种清漆有6种天然木材的色泽可选。《柯林斯英汉双解大词典》

5·Angola was a country rich in natural resources.

安哥拉是个天然资源丰富的国家。《柯林斯英汉双解大词典》

天生的

1·She is a natural athlete.

她是个天生的运动健将。《牛津词典》

2·He's a natural leader.

他天生是个领袖。《牛津词典》

3·His natural ebullience began to return.

他天生的热情开始恢复了。《柯林斯英汉双解大词典》

4·I'm a natural pessimist; I usually expect the worst.

我是个天生的悲观主义者，我总是往最坏的方面想。《柯林斯英汉双解大词典》

5·Lorenzo was a natural leader who made friends easily.

洛伦佐是个天生的领导者，结交朋友容易。《柯林斯英汉双解大词典》

自然界的

1·This way he could research the environment in detail and get a true picture of the natural world.

通过这种方式，他可以详细研究环境，了解自然界的真实画面。

2·Children are frequently discouraged from involvement with natural spaces, for health and safety reasons, for fear that they might get dirty or that they might cause damage.

出于健康和安全方面的考虑，担心会弄脏或受伤，孩子们经常被劝阻不要接触自然界。

3·The originative solutions contained in the natural world have been found to apply for the various problems arsing from material science and technology. We can learn much from it.

自然界已经发现了有创新性的解决方案，适用于材料科学和技术领域各种各样的问题，我们可以从中学到很多东西”。

4·I would also point out that humans are a part of the natural universe. One could reasonably argue that everything and anything that we do is natural.

还有一点我想指出的是，人类本身就是自然界的一部分，你可以理直气壮地说我们所做的每一件事、任何一件事都是“自然”的。

5·Despite their natural origins, they are not free of potential side effects, such as high blood pressure, digestion trouble, fertility problems and depression.

尽管它们来源于“自然界”，但它们不能摆脱潜在的副作用，如高血压，消化麻烦，生育问题和抑郁症等。

大自然的

1·Perhaps with the tools of this new technological revolution, we will be able to undo some of the damage done to the natural world by the last one-industrialisation.

也许，有了这次新技术革命的工具，我们将能够消除上次工业化对大自然造成的一些损害。

2·When we look around us at the natural world, there is often an ulterior motive.

当我们在大自然世界中环顾四周时，心里往往怀有一个动机。

3·Some 67% of Republicans either deny the existence of climate change or attribute the phenomenon to natural causes.

有67%的共和党人士或否认气候变化的存在或把这种现象归因于大自然。

4·At the end of my research project, I put the pieces of this natural puzzle together, and I discovered the answer.

在研究项目最后，我将这个大自然的拼图游戏一块块地拼接好，也找到了问题的答案。

5·Look for everyday opportunities to learn as a family — and remember to embrace the natural curiosity and wonder of your kids.

作为一名家长寻找每天学习的机会，记得保护孩子对大自然的好奇心的怀疑精神。

正常的

1·At this speech, his nose returned to its natural size.

说了这番话，他的鼻子又恢复了正常大小。

2·It is natural for everyone to pay much emphasis on his/her own image.

每个人很在意自己的形象这是很正常的事情。

3·However, we have already reached temperatures that are in line with other minimum-ice periods, so continued warming is likely not natural.

然而，我们已经达到了与其他最低冰期相一致的温度，所以持续变暖可能是不正常的。

4·A small child's confusion in distinguishing the right from the wrong is quite natural.

小孩子不明是非是很正常的。《新英汉大辞典》

5·There are some scopes that seem to be natural for grouping purposes.

有一些范围对分组目的来说似乎是很正常的。

纯天然的

1·Maybe what's inside is not so natural.

里面的东西可能并非那么纯天然。

2·Natural fabrics like silk and wool are better insulators than synthetics.

丝绸和羊毛之类的纯天然织物比合成纤维更加保暖。《柯林斯英汉双解大词典》

3·The fact is, natural food, or all natural food means absolutely nothing in this day and age.

事实情况是，如今这年头，天然食品，或所谓的“纯天然食品”，简直就什么都不是。

4·Organic farming has emerged as one of the industries of the future as more and more people are demanding the most natural and nutritious choices for their families.

由于人们在家居生活中越来越倾向选择那些纯天然的、最为健康的食品，因而有机农业日益成为一项朝阳产业。

5·Alternatively, you could serve apple slices with natural almond butter for dipping.

你也可以选择将苹果切成薄片，沾些纯天然的杏仁黄油。

本能的

1·These are natural fears.

这是本能的害怕。

2·I began to think how ridiculous it is that our most useful allure is resistance and that our natural reaction is to push away someone who shows that he CARES.

我开始想这是有多滑稽。我们最管用的魅力是拒绝，我们最本能的反应是推开那些表现出关心我们的人。

3·That's a natural response, of course.

当然了，这是一种本能反应。

4·It is the most natural state of man, and therefore the state in which you will find solid Happiness.

它是人类最本能的状态，因此是一种最幸福的生活状态。

5·The 30-year-old journalist pleaded not guilty to the assault charge Wednesday, telling the three-judge panel that what I did was a natural response to the occupation.

本周三，面对攻击外国领导人的指控，30岁的扎伊迪坚称自己无罪，并对三人陪审团说“他的所作所为是对美国侵占伊拉克的一种本能反应。”

天赋的

1·You are a natural.

你是有天赋的。

2·Much of Britain's Olympic success, he argues, is down to a combination of natural ability and sheer dedication.

他认为英国在奥林匹克上取得的成绩，归根结底是由于天赋的能力加上长期不懈的勤奋。

3·We seem to think that we have a natural instinct for coming up with surefire entrepreneurial concepts that involve the organization and distribution of any type of information content.

看上去对于有关组织传播与信息相关的内容的创业概念，我们是有天赋和直觉的。

4·Other people have natural athletic abilities, excelling in physical coordination. Still others are good at mathematics or music or mechanics.

有些人天赋运动的才能，亦有些人精通数学、音乐或机械。

5·Others might have a natural singing voice, which does exist, and is enough to get them by at their professional level.

一些人有一种能达到专业水准的天赋。

(1)natural gas天然气

(1)natural environment自然环境

(1)natural science自然科学

(1)natural disaster自然灾难，自然灾害

(1)natural resource自然资源

(1)natural language自然语言