strain

strain的意思是：n. 拉紧；用力；扭伤；拉紧的物体；品种；血统；紧张状态；负担；重负；拉紧的肌肉或肌腱的紧张状态；拉紧的弦；紧张关系；v. 拉紧；使紧张；使用力；使变形；使过种而受损。

【联想】谐音_死拽呢？=拉紧、拉伤、拉力

【记】st(联想street，街道)+rain(雨) →在雨中的街道上行走，必须拉紧神经，以免扭伤。

s蛇，train训练-》蛇训练”拉紧“”气质。

rain:雨 -> train :训练 ->strain 拉紧、扭伤（雨天训练容易身体拉紧且扭伤）

发音：strain死拽；死拽绳子才会拉紧

用作名词(n.)

The rope finally broke under the strain.
绷紧的绳子终于断了。
The tugs took up the strain and the ocean liner edged away from the quayside.
拖船开始拉紧了，远洋客轮徐徐离开了码头。
All her senses were on the strain when the test was going on.
测试时，她所有的感官都处于紧张状态。
A sudden and severe strain was placed upon us by the cutting off of these supplies.
由于供给突然被切断，我们感到了沉重的压力。
The Germany strain in him makes him like philosophy.
他的德意志民族的血统使得他喜欢研究哲学。
He created a new strain of sheep.
他培育出一个新的绵羊品种。
Any flu epidemic is worrisome, especially when a new strain of flu bug is involved.
任何流感大流行都令人不安，特别是当一种新型毒株介入的时候。

用作动词(v.)

Too heavy a load will strain the rope to its breaking point.
负载过重会把绳子拉紧到崩断的地步。
A warm-up is important before a run so as not to strain any muscles.
为了避免拉伤肌肉,跑步前做做准备活动很重要。

1. strain on/from：使……承受压力/拉力

例：The weight of the box is straining the rope.

2. strain one's/a's muscles：拉伤肌肉

例：I think I strained my back lifting that heavy box.

3. under strain：处于紧张状态

例：The relationship between the two companies is under strain due to recent events.

4. strain out：分离出……

例：The centrifuge is used to strain out impurities from the liquid.

5. strain filter：过滤器

例：We need to use a strain filter to remove the impurities from the water.

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