And, not too many people, actually, if you talk to your grandmother or grandfather, there were some refrigerators that were actually made that used ammonia.

但是，并非太多的人，如果你会对你的祖父，祖母谈谈，或许有一些冰箱,实际上是用氨。

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How would you explain to your grandmother what the difference is?

你该怎么和你的祖母解释这个区别呢？

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