Permutit ethods
[医] 人造浮石法(检尿氨)
🧩 词语组成解析
[机] 人造沸石
🗣️ 情景例句
I'm out of a job at the moment.
现在我失业了。
He isn't really serious; he's just playing games with her.
他并不是一本正经，只是跟她玩玩游戏而已。
What about a quarter past two?
2：15怎样！