Games are usually used to beguile small children.

游戏常用来哄小孩。

Cosmetics are often used to conceal facial blemishes.

化妆品常用来部色斑。

I used to snare small birds such as sparrows.

我曾常用罗网捕捉麻雀等小鸟。

The most commonly used agents in this situation are sodium nitroprusside (Nipride) and labetalol (Normodyne).

最常用的药物是拉贝洛尔硝普钠。

Sheets of corrugated iron are often used for temporary roofs and fences.

波纹铁皮常用以建造临时屋顶围墙。

The baculine argument was used as a common mode of argument in those days.

鞭挞的方法是当时常用的一种说服方式。

Farmers often enclose their land with hedges.

农夫们常用树篱将他们的地围起来。

The term actinomorphy is generally used to describe radial symmetry in flowers.

常用“辐射称”描述辐射状的花。

The schwa is the most frequent vowel sound in English speech.

在英语中，中元音是最常用的元音。

In algebra, the sign X usually denotes an unknown quantity.

在代数里, 符号X常用来表示未知数。

English schoolmasters used to cane the boys as a punishment.

英国小学师过去常用教鞭打男学生作为惩罚。

This doctor often uses herbal remedies.

这个医生常用草药治病。

The commonly used medicine has ammonia armor pterin (mtx) and Mi Feisi the alkone.

常用的药物有氨甲蝶呤(mtx)米非司酮。

Paw print, or pugmark, tracing is another common technique for counting tigers.

爪印的足迹同样是常用的计算数量的方法。

Commonly adopted to get lambdoid sewing of leather and to embroider on cloth.

备有自动卷线器，操作简单，常用于皮料人字缝及布料绣花。

Propylene,the common petroleum gas,is subject to gasification under heating and liquification under pressure.

丙烯是一种受热易气化、受压易液化的常用石油气。

Salt is the most common seasoning.

盐是最常用的调味品。

It is often used to treat wind-heat cold,alternate attacks of chills and fever,dyspepsia,abdominal distention,borborygmus,etc.

常用于治疗风热感冒、寒热往来、食积不化、腹胀肠鸣等证。

The affixes “un-”and“-less”are often used make negative words, such as unhappy or careless.

词缀un--less常用来构成否定词，如unhappycareless。

Have you looked up some of the unusual words like apathia, aphasia and athambia?

你有没有查一些不太常用的词像冷漠，失语症冷静？