Methylaminoheptane
甲庚胺
??? 情景例句
I heard that some tours actually go down into the canyon. Is that true?
我聽說有的旅游團真正下到峽谷里去了。那是真的嗎？
Stingy bastard!
小氣鬼！
I was very glad when the boys won the relay race.
我非常高興，男同學(xué)在接力賽中獲勝。