Circulus willisii
[医] 大脑动脉环
🧩 词语组成解析
[医] 环, 圈
🗣️ 情景例句
I'm afraid I'll be tied up tomorrow at ten.
恐怕明天上午10点我很忙。
I ate jam for breakfast yesterday.
我昨天早饭吃的是果酱。
But he has not promised to give you any of his blood.
但是他并没有答应给你他身上的任何一滴血。