Leakproofness
密闭度
🗣️ 情景例句
I wish Michelle and her friends would get here.
我希望 Michelle和她的朋友很快就到这 。
Kindness always begets kindness.
善有善根。
I'm afraid that he'll forget it if he misses so many lessons. He may even fail his Chinese exam.
如果他再缺这么多课，恐怕他会忘记很多的。他的汉语考试甚至会不及格。