但如果没有，那就考虑买个小保冷袋。

But if not, consider investing in a little chiller bag.

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把你的水冻上一晚或者保冷一天。

Freeze your water overnight or longer to keep it cold throughout the day.

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什么样的阀门应该保温或保冷，要根据生产要求而定。

What kind of valve should be heat or cold insulation, according to the production request.

youdao

什么样的阀门应该保温或保冷，要根据生产要求而定。

What kind of valve should be heat or cold insulation, according to the production request.

youdao