Non-return valve
[化] 止逆阀; 单向阀
🏥 医学释义
单向活门，单向阀
🧩 词语组成解析
non
[[nɔn]]
adv. 非, 不
valve
[vælv]
n. 阀;真空管;（管乐器的）活栓;（心脏的）瓣膜;
vt. 装阀于;以活门调节;
🗣️ 情景例句
Let's get engaged.
我们订婚吗？
If I buy that car, I'll have to make monthly payments.
如果我要买那辆车的话，我必须每月分期付款。
She does, doesn't she! I read she's twenty-nine,- but she must be at least forty.
是的，谁说不是呢！我从报上看到她是29岁，但她一定至少有40岁了。