Hydraulic seal
[化] 水封
🧩 词语组成解析
hydraulic
[haɪ'drɔlɪk]
adj. 水力的，水压的;用水发动的;[建]水硬的;水力学的;
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
There's nothing's as troublesome as a naughty clild.
没有东西比淘气的孩子更麻烦了。
I believe the first test of truly great man is his humility.
一个真正伟大的人，对他的第一个考验就是看他是否谦逊。
I'm planning to start a school, so I'm trying to save as much money as possible.
我计划开办一所学校，因此我在设法尽可能地多攒钱。