Valvetrain
气门
🗣️ 情景例句
I didn't realize how late is was.
我不知道已经这么晚了。
Wouldn't you like some coffee?
你想要一些咖啡吗？
Needless to say, the bigger the risk an insurance company takes, the higher the premium you will have to pay.
不用说，保险公司承担风险越大，你付的保险费也就越高。