Porter's sign
[医] 波特尔氏征, 奥利佛氏征(见于主动脉弓动脉瘤)
🧩 词语组成解析
🗣️ 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。
You've inherited a large estate!
你继承了一大笔遗产嘛！
I was angry because they were late.
我生气，因为他们迟了。