Parosonsite
斜磷铅铀矿
🗣️ 情景例句
I gave that idea up a long time ago.
我很久以前就放弃了那个想法了。
It's a waste of time.
这是浪费时间。
You'll have to wear this hard hat for the tour.
参观时必需戴上这安全帽。