Pentabromination
五溴化反应
🗣️ 情景例句
Thanks a lot.
多谢，多谢！
We must arrive there on time.
我们必须准时到那儿。
When it did so, it sent sparks down to the ground and these immediately started a fire.
当它这样做时，把火花送到了地面，这些火花立刻引起了一场大火。