Central canal
[医] 中央管
🧩 词语组成解析
🗣️ 情景例句
We had a cat when I was eight years old.
我八岁时养过一只猫。
I'm fine, and you?
我还好，你呢？
It was not long before a helicopter arrived on the scene to rescue the survivors of the plane crash.
不久，一架直升飞机飞抵飞机失事现场，来搭救这几个幸存者。