Cchd
[医][=cyanotic congenital heart disease]紫绀型先天性心脏病
🗣️ 情景例句
Drop the gun, or I'll shoot.
扔掉枪， 不然我就开火了。
Fall sick and you will see who is your friend and who is not.
困难见友情。
But I'm worried about his Chinese.He may fall behind the other students when he comes back.
但我担心他的中文。等他回来后，他可能会落到其他同学后面。