1. This is a life preserver.
这是救生用品。

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2. The life preserver kept him up until the boat came.
救生衣使他保持浮在水面直到小船来救他。

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3. Alright, I'll go and take my life preserver. Promise me nothing bad will happen.
那好吧,我去拿救生圈。你要保证我没事。

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4. Alright, I'll go and take my life preserver. Promise me nothing bad will happen.
那好吧,我去拿救生圈。你要保证我没事。

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