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
Sometimes I lack patience in what I am doing. However, I'm very careful with my work.
我有时候对自己的所作所为缺乏耐心，不过工作很细心。
It's better than nothing.
总比没有好。
Betty and Susan are talking on the telephone.
贝蒂和苏珊正在通电话。