Circle of willis
动脉环；脑底动脉环；韦氏动物环；[解剖] 韦利斯氏环
🧩 词语组成解析
of
[əv]
prep. 关于;属于…的;由…制成;
aux. 助动词 [非标准用语、方言] =have [主用于虚拟语气];
n. 威利斯（姓氏, 男名）
🗣️ 情景例句
What's that?
什么事？
Oh, that's all right.
哦，没关系。
But exactly how does a newcomer to the stock market go about achieving that?
但是，一个股票市场的新手又如何能做到这一点呢？