cold sweat 直译过来就是“冷汗”的意思，由惊恐或休克等原因而出的汗，出汗时手足发冷，所以叫冷汗，它表示：
the condition where extreme fear or nervousness causes a person to feel a chill along with moist skin or sweat
极度恐惧或紧张使人感到寒冷，皮肤潮湿或出汗
a situation when a person is extremely afraid, nervous or anxious
一个人极度害怕、紧张或焦虑的状态
sweating caused by nervousness, fear or sickness
因紧张、恐惧或疾病而出汗
例如：
I woke up from a nightmare, breathing heavy and in cold sweat.
我从噩梦中醒来，呼吸沉重，浑身是冷汗。
解析：breathing heavy and in cold sweat 现在分词作状语表伴随。
The hostages were in a cold sweat as they saw the hijacker pointing a gun on the air-hostess.
人质看到劫机者用枪指着空姐的时候，吓了一身冷汗。
解析：as 引导的时间状语从句表示的是一件事情正在发生，另一件事也正在进行当中，从句一般不用进行时，而只是一般过去时，译成“边……边……”。
Just thinking about the whole situation makes me break out in a cold sweat.
一想到整个情况，我就大汗淋漓。
解析：动名词短语 just thinking about the whole stituation 作主语，谓语用单数。
She broke out in a cold sweat as she read the last warning notice from the bank about the loan repayment.
当她读到银行关于还贷的最后一份警告通知时，她突然出了一身冷汗。
Every member of the dysfunctional family was in cold sweat as the lawyer opened the father's will.
当律师打开父亲的遗嘱时，这个失调的家庭的每个成员都出了一身冷汗。
解析：every 只能作限定词，修饰名词，它不能单独作主语，而 each 可以单独作主语，后面常接 of 短语，又如：
Each of the books is interesting.
每本书都都很趣。
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