Dacryocystography
[医] 泪囊造影术
🗣️ 情景例句
You were four or five years old, I think.
当时你才四、五岁 我想。
Here!
到！
Why does aperson standing in a bus or train tend to fall when a sudden start is made?
一个人站在公共汽车或火车上，当车突然开动时，他为什么会倾倒呢？