Pentafluorinated
五氟化的
🗣️ 情景例句
I care about people, not things.
我关心人， 而不是东西。
Here are the two originals of the contract we prepared.
这是我们准备好的两份合同正本。
If fifty pence pieces are not exchanged for sweets, they rattle for months inside money boxes.
如果50便士不拿来换糖吃，则可以放在储蓄罐里叮当响上好几月。