Ubehebe
爆发火山锥
🗣️ 情景例句
She is giving me piano lessons in exchange for her English classes.
我教她英语，她教我弹钢琴。
The chemist is testing enzymes.
化学家在试验着酶。
I don't like to be late. We begin classes at 8:00.
我不喜欢迟到。我们八点上课。