Pentabromide
五溴化物
🗣️ 情景例句
I still don't understand what you mean.
我还是弄不懂你是什么意思。
I stayed and did some extra work.
我留下加了一会儿班。
I can hear something! said Lucy.Does anybody live on this island?
“我听到什么东西了！”露茜说，“岛上有人居住吗？”