under/below/beneath/underneath.导航词义：在…下面

1. under:prep. 在…下面，在…底下.指某物在另一物的下面或底下，两者之间有无一定距离均可。

Two old men are playing chess under the tree.

两个老人正在树下下棋。

Your bag is under the bed.

你的包在床下面。

You'd better lie under a blanket.

你最好盖条毯子躺着。

2. below:prep. 在…下面，低于.指某物所处的位置低于另一物。

Some cities are below sea level.

有些城市位于海平面以下。

Have you heard voices in the courtyard below your window?

你听到窗户下面的院子里有人在说话吗？

3. beneath:prep. 在…下面，在…正下方.指所处位置时，与 under, below 基本同义，但有时强调在某物的正下方，而且较富有文学性。

Many tourists enjoy feeling the warm sand beneath their feet.

很多游客喜欢脚下踩着温暖沙子的感觉。

beneath the silvery moon, the sea is more attractive.

在银色的月光下，大海更加吸引人。

They slept outside beneath the stars.

他们露宿在繁星之下。

4. underneath:prep. 在…下面，在…底下.与 under 的意思相近，但含有将某物隐藏或遮盖起来之意。

I'll leave the key underneath the mat.

我会把钥匙放在垫子下面。

He used to hide his blonde hair underneath a baseball cap.

他以前常用一顶棒球帽裹住满头金发。

Even she herself has forgotten about the box underneath the floorboards.

甚至她自己也忘了藏在地板下面的盒子。

全部

1·The boat heaved beneath them.

小船在他们脚下颠簸着。《牛津词典》

2·The valley spread out beneath us.

山谷在我们下方延伸。《牛津词典》

3·The grey ocean seethed beneath them.

灰蒙蒙的大海在他们下面翻滚。《牛津词典》

4·He burrowed down beneath the blankets.

他钻到毯子下面。《牛津词典》

5·The water churned beneath the huge ship.

水在巨轮下面剧烈翻滚。《牛津词典》

6·On a shelf beneath he spotted a photo album.

在下方的书架上他发现了一本相册。《柯林斯英汉双解大词典》

7·The body was hidden beneath a thin layer of soil.

尸体被埋藏在薄薄的一层土下面。《牛津词典》

8·He noticed some slight puffiness beneath her eyes.

他注意到，她眼睛下方有一些轻微的眼袋。《柯林斯英汉双解大词典》

9·They found the body buried beneath a pile of leaves.

他们发现尸体被埋在一堆树叶下面。《牛津词典》

10·There is a handy storage compartment beneath the oven.

在烤箱的下面有一个便利的橱柜。《牛津词典》

底下

1·Four levels of parking beneath the theatre was not enough.

剧院底下的四层停车库还不够。《柯林斯英汉双解大词典》

2·Surprisingly, she saw her long-lost wedding ring beneath the leafy top of one tiny carrot.

令人惊讶的是，她在一根小小的胡萝卜叶底下看到了她遗失已久的结婚戒指。

3·The city was equipped with a drainage system, for a great many clay pipes were found beneath the narrow streets.

城里甚至还敷设了排水系统，因为在狭窄的街道底下发现了许许多多陶土制作的排水管道。

4·Upon a chair hung the suit, carefully folded; beneath it the two mute shoes and the discarded socks.

椅子上放着一套衣服，折叠得好好的；椅子底下有两只寂寞无声的鞋和一双扔了不要的袜子。

5·She was dressed in a football uniform, shoulder pads beneath the jersey and eye-black across her cheekbones.

她穿的足球装，衣服底下垫着肩垫，颧骨上涂着防阳光的黑色。

在下面

1·Then the youth went to the gallows, sat down beneath it, and waited till evening came.

于是年轻人走到绞刑架前，在下面坐了下来，一直等到天黑。

2·A typical work, such as Seven Days, consists of a single beautiful black-and-white photograph taken on an epic walk, with the mileage and number of days taken listed beneath.

一个典型的作品，比如《七天》，由一张美丽的黑白照片组成，它是在一次史诗般的步行中拍摄，拍摄的里程数和天数就列在下面。

3·With difficulty he released the mattress from the metal frame, and groped beneath it.

他费了很大劲把床垫从金属架上卸下来，然后在下面摸索一番。《柯林斯英汉双解大词典》

4·The coverings of the bed were disposed as if one lay beneath them--happened that by accident?

床上的被褥布置得好像有人躺在下面似的——这是偶然吗？

5·Some were topped with great domes of colored glass. In the gathering dusk, with fires lit beneath them, the domes glowed blue and red and green and purple.

有些顶着彩绘玻璃的圆顶，在聚拢的黄昏中，有着点燃的火焰在下面燃烧，圆顶游览变红接着变绿，最后变紫。

在下方

1·She kept her face centered in the frame of the oval window and, holding her breath in delight, watched as everything she had known receded beneath her.

她的脸一直贴在椭圆形的窗框中间，欢快地屏住呼吸，看着她熟悉的一切在下方远去。

2·Because the CAM is beneath this point, it is the thinnest part of the lock and thus the easiest to break.

因为凸轮就在下方，所以造成此处是全锁最薄弱的地方，很容易被折断。

3·Operation: School Official Cites Use mouse click click oblong rotating pipe, Please beneath EDI pipeline before the end of the countdown for magma to flow out.

操作说明：鼠标左键点击方块旋转管道，请在下方倒计时结束前联通管道让岩浆流走。

4·Typically lasting only a few minutes, dust devils becoming visible as they pick up loose red-colored dust leaving the darker and heavier sand beneath intact.

尘埃风暴持续了仅仅数分钟，当风把稀疏的红色尘埃吹起留下了颜色较深、较重的沙土在下方时，尘埃风暴变得可见。

5·We already have registered members who joined lacking a referrer, we can place these members beneath you and let you rake in the rewards!

我们已经有注册成员加入，缺乏推荐，我们可以把这些成员在下方你，让你耙在奖励！

低于

1·The islanders commuted to shore in canoes, or they built causeways just beneath the surface to conceal them from the crannog-looting scoundrels that roamed the countryside.

岛上的人乘独木舟与岸上交通往来，或者建造低于水面堤道。因为乡野之所流氓猖獗，将堤道隐藏在水下可以防止小岛被打劫。

2·As evening deepens, the moon and these Libra stars descend westward, to sink beneath the southwest horizon by mid to late evening.

随着夜色愈加浓烈，月亮和天枰座的星星们逐渐往下沉西行，直至半夜以后便逐渐低于西南方向地平线。

3·If it's not something that meshes with your professional trajectory or it's way beneath your skill level, don't apply for it.

如果不是和你职业轨迹吻合，或者大大低于你的水平，就不要申请。

4·Switzerland are a better team than people give them credit for, and Argentina have been playing this entire cup beneath their abilities.

瑞士比人们所夸赞的更加出色，而阿根廷整届杯赛则一直低于真实水平。

在底下

1·Besides, I was out of practice in talking to him: his reserve was again frozen over, and my frankness was congealed beneath it.

此外，我已疏于同他交谈，他的冷漠态度再次结冻，我的坦率便在底下凝固了。

2·The valley lies beneath.

山谷就在底下。

3·It was due to how this particular type of creation was long forgotten that creators chose this blueprint to cast in order to hide something they did not wish revealed beneath it.

就是由于这个特殊类型的造物已被遗忘了很久，那些创造者们才选择这个蓝图来铸造，是为了在底下隐藏一些他们不想被揭发的东西。

(1)beneath one不会做出；不合身份