Pentafluoride
五氟化物
🗣️ 情景例句
Good-bye, Richard, and good luck. See you in two weeks.
再见， Richard， 祝你好运。两周后见。
All roads lead to Rome.
条条道路通罗马。
We only need to put the candles on it, now.
“我们现在只需把蜡烛插上就 行了。”