我不得不在烈日下爬山，做大量的体能训练，游泳等。

I had to climbed mountain, did much physical training, swimming and so on under the burning sun.

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游泳是军人体能训练的一项重要内容，也是军人所必需的一项生存和战斗技能。

Swimming is an important content of physical fitness training in army, and a kind of life - saving and fighting" tech for armyman."

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