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
They want to work.
他们想工作。
Some students quit school due to poverty.
一些学生因贫困而辍学。
But then another question came up.
但是另一个问题出现了。