Monogene
单成因的
🗣️ 情景例句
But next time, please ask me in advance to make a speech.
不过下一次请事先通知我一声要做演讲喔。
Don't be afraid he will get there on time.
不要怕他会准时到那里。
He was in the R.A.F.
他曾在皇家空军任职。