pressure

strain, stress, pressure, tension

这些名词均有“压力，重压，紧张”之意。
strain: 指某人为克服外力界压力而造成的身心和情绪等方面的压抑。用于物时，指任何力或合力作用于一个物体上面造成的应变。
stress: 侧重指承受外来的压力，也指由于某种原因而引起的心理、生理或情绪上的紧张。
pressure: 在科学上，指单位面积上所受到的压力。用于引申时，指某事物所产生的压力或影响力等。
tension: 多指因关系不好或其它原因而出现的紧张状态，也指某物被过度伸展的程度或状态。

名词 pressure:

1. the force applied to a unit area of surface; measured in pascals (SI unit) or in dynes (cgs unit)
   同义词：pressure level, force per unit area
2. a force that compels
3. the act of pressing; the exertion of pressure
   同义词：press, pressing
4. the state of demanding notice or attention
   同义词：imperativeness, insistence, insistency, press
5. the somatic sensation that results from applying force to an area of skin
   同义词：pressure sensation
6. an oppressive condition of physical or mental or social or economic distress

动词 pressure:

1. to cause to do through pressure or necessity, by physical, moral or intellectual means :"She forced him to take a job in the city"
   同义词：coerce, hale, squeeze, force
2. exert pressure on someone through threats
   同义词：blackmail, blackjack

1. The birth of twins put pressure on them to find a bigger flat.
   他们生了双胞胎，不得不寻找一套较大的住房。
2. The tyre is too hard reduce the pressure a bit.
   这轮胎太硬，要减少一点压力。
3. The water pressure may need adjusting.
   水压可能需要调整。
4. It was done under the pressure of the necessity.
   这件事是在迫切需要的情况下而做的。
5. It took a bit of pressure to make the lid close.
   要稍按一下才能把盖子盖紧。