Calcium-channel
[医]钙通道
🧩 词语组成解析
🗣️ 情景例句
and lays them face up on this stand.
将它们掀开放在这个架子上。
We have a toll-free number for customers to call.
我们对顾客提供免费服务电话。
I don't know. I think he's very old.
不知道。我想他年纪一定很大了。