Paraquinoid
对醌型
🗣️ 情景例句
take a vacation away from the family--alone.
离开家人而单独在一起渡个假。
Mr. Smith is still in his fifties.
史密斯先生仍然50几岁。
At the end of this period we put the play on in a theatre.
最后我们就在剧场上演这出戏。