🧩 词语组成解析
[医] 铁角蕨属
🗣️ 情景例句
We'll open a letter of credit if you promise to effect shipment one month earlier.
如果你方答应提前一个月交货，我们就同意开信用证。
What's in it for me?
我有什么好处？
The book is protected by copyright.
该书受版权保护。