1、double

双的;成双的;成对的

a pair of double doors into the room from the new entrance hall.

从新的门厅通向该房间的一对双开门

a lone skier gliding along smooth double tracks.

独自沿平滑的双轨雪道滑行的滑雪者

(用于单数名词前)两个的，双重的

an extremely nasty double murder.

极端残忍的双重谋杀

The government committed a double blunder.

政府重蹈覆辙。

(数量、大小)两倍的，加倍的

The offer was to start a new research laboratory at double the salary he was then getting.

所提供的工作机会是创建一个新的研究实验室，待遇是他当时所得工资的两倍。

Leeds Prison is reported to have almost double the number of prisoners it's designed to accommodate.

据报道利兹监狱里犯人的数量几乎已达该监狱设计可容纳人数的两倍了。

兼职;兼任;兼做

a farmer who doubles as a night nurse.

兼做夜班护士的农夫

Lots of homes in town double as businesses.

镇里的很多民宅还兼做商用。

2、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。

（用符号等）表示，表达

We can express that equation like that.

我们可以这样表示那个等式。

It is expressed as a percentage.

它是以百分比的形式表示的。

（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。