It also involves refloating the boat in a way that doesn't cause physical stress to it.

还需要以一种不会对船造成物理压力的方式将船重新上浮。

This process can cause the ground underneath a building to lose its solidity under great physical stress.

这一过程可能会导致建筑物所在地面因巨大的物理压力失去稳固性。

He says smiling is a first step in fighting physical and emotional stress and its sometimes harmful effects on human health.

他表示，身体和情绪压力有时会对人体健康产生有害影响，而微笑是对抗这些压力和有害影响的第一步。

You've probably noticed how your heart beats faster during times of physical or emotional stress.

您可能已经注意到，在身体或情绪压力时，心脏的跳动速度更快。

Your immune system is working overtime to fight off the infection, and exercise, a form of physical stress, makes that task harder.

你的免疫系统本来就在超负荷地抵御感染了，运动，本身就是一种身体压力，只会让这项任务变得更加艰巨。

The emotional and physical stress, however, that occurs due to odd working hours is a prime reason for a lot of the career dissatisfaction.

对工作不满的主要原因是不规律的工作时间导致的身心压力。

The emotional and physical stress, however, that occurs due to odd working hours is a prime reason for a large of the career dissatisfaction.

然而，由于加班引起的情感和生理上的压力，是产生职业不满的主要原因。

Overall, the reviewers didn't recommend taking vitamin C unless you're undergoing extreme physical stress—like if you're a marathon runner or doing military training in the subarctic.

总的来说，研究这并不建议服用维他命C，除非你感觉正在经历极度的身体压力——比如说你是马拉松跑步运动员，或者是在亚北极做军事训练。

Often, this is due to weight loss from anorexia, nutritional deficiencies like excessively low fat consumption, prolonged periods of strenuous exercise, or severe physical or emotional stress.

通常，这是由厌食所致的体重下降、营养缺乏（如过低的脂肪摄取）、长时间剧烈运动或巨大的生理或精神压力造成的。

No one truly knows what dreams actually are with theories suggesting that they're brain's way of filing away memories or shutting down to deal with physical or mental stress.

没有人说的清楚梦到底是什么，有的理论说梦是把记忆归档，或者清除来缓解生理和心理压力的一种方式。

With repeated immersions, the body better adapts not just to this physical stress, but mental stress, including the psychological problems of life that lead to low spirits.

随着一次次沉浸入水，人体愈发适应，不仅是适应物理上的压力，更是适应了精神上的压力，包括生活中那些造成情绪低落的心理问题。

But overall, the surface of the Earth is just a lot more fluid than you think -- it’s not rigid enough for physical stress to travel through it over long distances.

但总的来说， 地球表面的流动性比你想象的要大得多— —它的刚性不足以让物理压力长距离传播。

One of these unknown phenomenons are dreams. No one truly knows what dreams actually are with theories suggesting that they're brain's way of filing away memories or shutting down to deal with physical or mental stress.

这些未知现象之一就是梦。没有人真正知道梦到底是什么，理论认为梦是大脑归档记忆或关闭以应对身体或精神压力的方式。