Whitlockite
白磷钙矿[石]
🗣️ 情景例句
He's been here for years, he should know the ins and outs of the job by now.
他在这里已经好多年，现在理应熟悉各方面的工作了。
Bye!
再见啦！
I would like to ask you about some stamps.
我想问问有关一些邮票的事。