Corion
绒毛膜
🗣️ 情景例句
using as many letters as possible.
尽可能多用字母，
It doesn't make any difference.
没什么差别。
Then the Class 2 runner dropped his stick on the ground when he was passing it on to the fourth runner.
忽然2班的运动员在传棒给第四个运动员时，把棒弄掉到了地上。