Arthron
[医] 关节
🗣️ 情景例句
What's the difference? No one will ever find out.
有什么两样？没有人会发现。
You must go to the moon. It's your duty.
你必须上月球去，这是你的职责。
There is some difference between the twins.
这对双胞胎有点儿不一样。