Umg
abbr. upgraded metallurgical grade 高級冶金級; urinary milk of calcium 尿中鈣乳
??? 情景例句
Do? I don't know.
讀什么 ？我不知道。
In your dreams!
想得沒喔！
I don't know why he's in a tailor's shop. Just look at his clothes!
真不懂他為什么進服裝店。瞧他這身打扮！