他开始大量出汗。

He began to perspire heavily.

《柯林斯英汉双解大词典》

我们进化出了大量出汗的能力，并且失去了大部分的皮毛。

We evolved the ability to sweat plentifully, and lost most of our fur.

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安全起见，一个好建议是尽量不要在炎热天气、长时间训练或者其它可能会大量出汗的情况下摄入咖啡因。

To be safe, it's probably a good idea to stay away from too much caffeine in hot weather, during long workouts, or in other situations where you might sweat a lot.

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