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n. [矿]水硅钾铀矿
🗣️ 情景例句
Smokers pollute the air.
吸烟污染空气。
I slipped on the stairs and fell down.I broke my leg.
我在楼梯上滑倒了并且掉下来我弄断了腿的。
There are some boats on the river.
河上有几艘船。