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
What made you decide to study Economics?
你为什么决定修读经济学？
If there's a chance you'll go ,I'd like to go with you.
如果有机会你去,我愿意和你一起去。
The IBM PC386 will be big enough for us.
而IBM386对我们来说就够大的了。