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
A special place for special people.
这是为特殊人物而设的特别地方。
How did you tell him?
你是如何告诉他的？
Do you want any milk?
要放些牛奶吗？