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
Do I have any appointments?
我有什么约会么？
How much does she drink?
她要喝多少？
I was thinking about Thursday?
我看星期四怎样？