Pentafluorization
五氟化反应
🗣️ 情景例句
OK. Thanks. See you later.
好 谢谢。再见。
You (or One) cannot make a silk purse out of a sow's ear.
粗瓷碗雕不出细花来。
or through hiring it, the total expense can be far less than the cost of hotels.
总费用算起来要比住旅馆开支少得多。