Perfluorocarbon
全氟化碳
🗣️ 情景例句
Do you have any suggestions?
你们有什么建议吗？
For one thing,I've got to drop by the bank to get some money.
首先，我得去银行取一些钱。
Most of the earth's surface is covered by water.
大部分的地球表面被水覆盖着。