Allen's fossa
[医] 艾伦氏窝, 股骨颈窝
🧩 词语组成解析
n. 窝, 凹\\n[医] 窝, 凹
🗣️ 情景例句
Do I have to get it done by noon?
我必须在中午以前做完吗？
His bad English is a bar to his getting a job.
他的英语很差，这是他找工作的一个障碍。
Do l have to
非做不可吗？