Polybromide
多溴化合物
🗣️ 情景例句
Won't he miss being in Florida?
他不会想念佛罗里达吗？
John is not forty-five yet,is he?
约翰不够45岁,是吗？
When she reached home, her mother asked:Have you got everything?
“你东西买齐了吗？”