Waltherite
砷铀铋矿
🗣️ 情景例句
But it is not polite to ask older people their age.
但问老人的年龄是不礼貌的。
I ought to go to bed now.
我应该现在去睡觉。
The noise pollution survey revealed a rather spurring and possibly amusing old fashioned source of noise.
这个有关噪音的污染调查还揭示了一种出人意外而同时可能会引人意外而同时可能会引人发笑的老式噪音源。