I am no physicist, but I imagine you have all blown air over the top of an empty bottle and heard the sound it makes.

我不是物理学家，但我想你们都曾往一个空瓶子的顶部吹过气，并听到过它发出的声音。

youdao

If it weren't so late I might go back and cash an empty bottle.

若不是天色已晚，我倒可以回去卖掉一个空酒瓶。

youdao

And don't place an empty bottle on the table - it must be placed on the floor.

不要将空瓶放在桌上，一定要放在地上。

youdao

Among the items retrieved from Mr. Han's body was an empty pint bottle of vodka, the official said.

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Some might recall family trips on which a parent insisted everyone bring an empty plastic bottle because there would be no stops.

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The court was also told Mr Farrow's DNA had been found on the cap of an empty beer bottle found at the vicarage in Thornbury, near Bristol.

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