医生在手术中创建了一个血管吻合口来改善血液循环。

The doctor created an ___anastomosis between the blood vessels during surgery to improve circulation.

外科医生小心地将两段肠道进行吻合，以确保正常功能。

The surgeon carefully performed an ___anastomosis between the two intestinal segments to ensure proper function.

这张叶片的脉络呈现出异常的网状连接。

The leaf exhibits unusual ___anastomosis in its vein patterns.