Germ wall
[医] 胚壁
🧩 词语组成解析
🗣️ 情景例句
How much do I owe you?
我应付你多少钱？
What I have done is due to patient thought.
我的成就是由于坚忍地思索。
Experiments have proved that children can be instructed in swimming at a very early age.
实验证明，儿童在很小的时候就可以开始学习游泳。