/ˌdiːˈlɪm.ɪt/

to mark or describe the limits of something

标出…的界限，给…划界

When you set the boundaries of something, you delimit it. Suburban homeowners often delimit their property lines with tall privacy fences.

当你为某件事设定边界时，你就划定了它的界限。郊区的房主经常用高高的隐私围栏划定他们的房屋的界线。

Police powers are delimited by law.

警察的权限是由法律来划定的。

There is also a figurative way to delimit, like when you delimit your summer schedule in an attempt to keep your cousin from visiting you for a month.

还有一种比喻的使用delimit的方式，比如你delimit你的暑期计划，规划出来一个时间段这样让你的表兄就不能在这期间来拜访你。