Sohc
单项上凸轮轴式
🗣️ 情景例句
I can't wait to see her.
我等不及要见她。
We have mainly adopted some usual international practices.
我们主要采取了一些国际上的惯例做法。
I am only interested in sitting in a boat and doing nothing at all!
我感兴趣的只是独坐孤舟，无所事事！