Pentabromobenzene
五溴苯
🗣️ 情景例句
And guess what?
你们猜怎么着？
Do you ever work at the factory on Sunday?
你曾经在星期日在工厂工作吗？
it is quite reasonable to regard the sea floor as the basic form of the crust of the earth,
因此完全有理由把海床看作地壳的基本模壳，