Circulus willisii
[医] 大脑动脉环
🧩 词语组成解析
[医] 环, 圈
🗣️ 情景例句
First, we need to more public relations activities to promote understanding.
首先，我们应该更多地做公关活动以促进了解。
It never rains but it pours.
祸不单行。（不鸣则已，一鸣惊人。）
I'm free on Thursday. I'd love to come.
我星期四有空。我很乐意来。