Sohc
单项上凸轮轴式
🗣️ 情景例句
I'll see you then.
到时候见啦。
I shave, brush my teeth, and comb my hair.
我洗脸，刷牙，梳头。
We shall need two buses to meet people at the staton.
我们需要两辆公共汽车到车站去接人。