delimit|delimited|delimits

我们需要划清工作时间和个人时间的界限。

We need to ___delimit the boundaries between work time and personal time.

文件中的每个数据段都用分号清晰地分隔开了。

Each data segment in the file is clearly ___delimited by semicolons.

这条河流划定了两个国家的边界。

The river ___delimits the border between the two countries.