Hard vacuum seal
[化] 强真空密封
🧩 词语组成解析
hard
[hɑrd]
adj. 困难的;硬的;有力的;努力的;
adv. 努力地;猛力地;严重地;沉重地;
n. 英〉硬海滩，登陆处;
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
Thanksgiving was about the Pilgrims,
感恩节是关于清教徒的，
If you want to be healthy, you have to stop smoking a pipe.
如果你要身体健康的话，必须停止抽烟斗。
Good! Thanks.
太感谢了。