1、express

表达;表述

He expressed grave concern at American attitudes.

他对美国的态度表示严重关切。

Sumner would greet us with frowns and grimaces, doing his best to express wordless disapproval.

萨姆纳会冲我们皱眉，做苦脸，竭力表示他无言的反对。

（观点、感情等）体现，不言自明

The anxiety of the separation often expresses itself as anger towards the child for getting lost.

离散带来的焦虑常常体现为对走失的孩子发火。

（目的或意图）明确的，特别的

I had obtained my first camera for the express purpose of taking railway photographs.

我已经买了我的第一架照相机，专门用来拍摄铁路。

2、underneath

在…下面；在…底下

The device exploded underneath a van.

该装置在一辆货车底下发生了爆炸。

using dogs to locate people trapped underneath collapsed buildings.

利用狗来寻找被困在倒塌的楼房下面的人

在下表面；在底面

Check the actual construction of the chair by looking underneath.

看看椅子的下面，检查一下它的实际构造。

The sand martin is a brown bird with white underneath.

崖沙燕是一种褐羽白腹的鸟。

在内心深处；心底里

He was as violent as Nick underneath.

在内心深处，他和尼克一样暴躁不安。

Underneath, Sofia was deeply committed to her husband.

索菲娅从内心里对丈夫忠贞不贰。