L'dwyer's tube
[医] 奥德外耶氏管(插管套管)
🧩 词语组成解析
🗣️ 情景例句
He's asleep.
他睡了。
Where is gate six?
6号登机门在哪儿？
It has to be tall because it is like a giant block and tackle,
井架必须很高，因为它像一个巨型滑轮组。