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
that will bring parents and teachers together once a week
让家长们及教师每星期一次
Tis a good horse that never stumbles.
好马不失蹄。
Sure enough, a policeman arrived on the scene and politely asked the workmen to go away.
果然，警察来了，不礼貌地请工人离开此地；