名词
中文翻译：Unknown
同义词：
['air pump', 'inflate', 'blow up例句：1. We need to air-drain the tires before we start driving.（我们在开始驾驶之前需要给轮胎放气。）']
例句：
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1. We need to air-drain the tires before we start driving.
我们在开始驾驶之前需要给轮胎放气。
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2.The car's air-drain valve is stuck, so it won't inflate properly.
汽车的放气阀卡住了，所以它不会正常充气。
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3.The balloon was blown up too big, and now it's hard to pop it back down.
气球吹得太大，现在很难把它放回去。