Gastightness
n. gastight的变形
🗣️ 情景例句
Michelle and her friends are at the aquarium in Brooklyn.
Michelle和她的朋友们在参观 Brooklyn的水族馆。
A hen is on her eggs.
母鸡蹲在它的蛋上。
What happened before printing was invented?
印刷术发明以前是怎么一回事？