If you feel under Stress, you feel worried and tense because of difficulties in your life. 精神压力
例：
Katy could think clearly when not under stress.
凯泰在没有精神压力时能够清晰地思考。
Pressure is force that you produce when you press hard on something. (用力按压而产生的) 压力
例：
She kicked at the door with her foot, and the pressure was enough to open it.
她用脚踢门，其产生的压力足以把门打开。
例：
The pressure of his fingers had relaxed.
他手指的压力已经减弱了。
同辈压力; 同龄人的压力
If you are experiencing pressure, you feel that you must do a lot of tasks or make a lot of decisions in very little time, or that people expect a lot from you. (因任务紧、决策时间短或别人的期望多而感到的) 压力 [also N in pl]
例：
Can you work under pressure?
你能在压力下工作吗？
例：
Even if I had the talent to play tennis I couldn't stand the pressure.
即使我有打网球的天资，我也承受不了那种压力。
If there is pressure on a person, someone is trying to persuade or force them to do something. (因极力劝说或强迫某人做某事而造成的) 压力 [also N in pl]
例：
He may have put pressure on her to agree.
他可能已对她施压让她同意。
例：
A lot of dot-coms were under pressure from their investors.
很多网络公司那时都在承受着来自其投资者的压力。
You can feel stress because of pressure. But pressure is something someone does to you. Stress is something you feel. Some people handle pressure well, others don't.
你会因为pressure而感到stress。但pressure是别人对你做的事。stress是你的感觉。有些人能很好地应对pressure，有些人则不然。
Stress is a feeling of duress. Pressure is external or internal expectations that can cause stress. Example: The pressure of passing this exam is causing me stress.stress是一种被胁迫的感觉。pressure是外部或内部的期望，会导致stress。通过这次考试的pressure让我stress很大。Pressure is always something someone puts on someone else. Stress can't be put on someone, however, pressure can result in stress.pressure一定是有人强加给别人的东西。stress不能施加在某人身上，然而，pressure会导致stress。Ex. : She's under a lot of pressure which is why she is so stressed lately.她压力太大了所以最近才这么紧张。Stress is more of an aftermath, or something that can come from pressure/too much stuff. Stress is more of a feeling.Pressure is when you are being inclined to or expected to do/say something.stress更多的是一种后果，或者来自pressure/太多的东西。stress更多的是一种感觉。pressure是当你倾向于或期望做某事/说某事时。Ex.This is making me stress out这让我压力山大This is so stressing这太有压力了They’re pressuring me into this他们逼我这么做I feel so pressured我感到压力很大
