Pentafluorization
五氟化反应
🗣️ 情景例句
You cannot believe how sorry I am.
你不知道我感到多么抱歉。
Be slow in choosing a friend; slower in changing.
选择朋友要审慎，摒弃更要审又慎。
It blesses those who give it, and those who receive it.
它不但赐福施予的人，而且赐福于受施的人。