Mechanical seal
[化] 机械密封; 端面密封
🧩 词语组成解析
seal
[sil]
n. 密封;印章;海豹;封条;
v. 密封;盖章;决定;封上（信封）;
🗣️ 情景例句
How about grating some cheese for our spaghetti dinner?
擦点奶酪今晚做意大利面条吃好吗？
Don't forget to thank him.
不要忘记谢谢他。
I sometimes stay in bed until lunchtime.
有时我要一直躺到吃午饭的时候。