When your exhaust pipe falls off, you have to replace it.

当你的排气管脱落时，你只能更换它。

《柯林斯英汉双解大词典》

Make sure that snow has not blocked the exhaust pipe.

确保没有积雪堵塞排气管。

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Installing a dryer heat saver into the exhaust pipe will deflect heat from the dryer back into your home.

在排气管内安装一个干燥热量保护器可以让热量从干燥机里面转到室内。

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