Clappet
[建] 止回阀
🗣️ 情景例句
Would you mind showing me your showroom?
您可以带我参观一下展室吗？
If the counsel be good no matter who gave it.
只要忠告中肯，谁提都行。
How do you do? My name is Fred Smith.
您好，我是弗雷德.史蜜斯。