Servovalve
[电] 伺服阀
🗣️ 情景例句
mashed potatoes, and a tossed green salad to begin with.
马铃薯泥， 还有蔬菜沙拉当头道菜。
You can forget that!
你别想了吧！
How long have you been at this school?
你到这学校有多么时间了？