Heated air may be circulated to keep fresh produce from incurring chilling or freezing injury.
热空气可能会循环流动，从而保证新鲜农产品不会产生冷害或冻害。
The winter was so bitterly cold that the duckling swam about in the water to keep himself from freezing.
冬天非常地寒冷刺骨，因此这只小鸭在水中游来游去以免冻僵了。
Since I have a liner at the bottom , it is necessary to keep a floating heater to prevent a certain section from freezing to allow gases to escape.
由于我的池子加了衬底，所以同时我也使用一个漂浮的热源，这可以保证我的水体不致于全部冻结以利于气体的流通和沼气外泄。
An antifreeze is a liquid that is added to water to keep it from freezing.
防冻液是一种液体，加入到水中可防止水结冻。
An antifreeze is a liquid that is added to water to keep it from freezing.
防冻液是一种液体，加入到水中可防止水结冻。
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