Pentafluorization
五氟化反应
🗣️ 情景例句
Been healthy lately?
最近健康吗？
I ache all over.
我浑身酸痛。
I also need your permission to speak to the family lawyer about this matter.
我还需要你的许可，就关于这件事跟你们的家庭律师谈话。