Pentabromination
五溴化反应
🗣️ 情景例句
He is a big fan of the NBA games.
他是NBA的铁杆球迷。
His parents anticipate Gary's return home will be soon.
凯利的双亲认为他不久就会回家。
Twenty or thirty pages of information handed to any of the major world powers around the year 1925 would have been sufficient to change the course of world history.
如果把二三十页的情报交给1952年前后的任何一个世界强国，就足以改变世界历史的进程。