Sohc
单项上凸轮轴式
🗣️ 情景例句
In America, being highly educated often over-qualifies you for many jobs.
在美国，学历过高会使你得不到工作。
Would you like to leave your telephone number?
你想要留下你的电话号码吗？
Good heavens! There you are!
哎呀！你们才回来！