ligation of hilar vessels

例句：

1. 1. The scientist found a new method to ligate the veins in the tissue.
   科学家发现了一种新的方法来给组织中的静脉做连接。
2. 2.The two countries have been ligating for decades over the issue of border control.
   这两个国家因边境控制问题而持续了几十年的对立。
3. 3. The team successfully ligated the leaky pipe and stopped the water from flowing out.
   团队成功地将漏水的管道连接起来，阻止了水流出来。