Retaining valve
[化] 单向阀
🧩 词语组成解析
n. 保留, 保持, 维持防护\\nv. 保持( retain的现在分词 ); 拦住; 保存; 止住
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
Thanks. Thanks a lot. Good-bye.
谢谢。非常感谢。再见。
That's just what I was thinking.
我就是这么想的。
Now he has put an ugly stone head over the gate.
现在他把一个丑陋的石雕头像放在了大门上边，