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Turn off supply pressure and observe float drop to open air inlet.
关闭供应压力，观察浮子下降，因此开启。
youdao
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They will also float if you drop them in the water.
如果你把它们丢进水里，它们也会浮起来。
《柯林斯英汉双解大词典》
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They will also float if you drop them in the water.
如果你把它们丢进水里，它们也会浮起来。
《柯林斯英汉双解大词典》