Pentabromination
五溴化反应
🗣️ 情景例句
I'll call you again later, OK?
我以后再打给你，好吗？
The post office is in the middle of the block, You can't miss it.
那邮局就在街区的中间，很好找。
Let me see, please. No, it's not mine. I think it's his.
让我看看，不是我的。我想是他的。