She used the plunger to clear the sink drain.

她用马桶吸盘清理水槽的排水管。

Once, when I was in college, I saw a cockroach crawl out of the sink drain in my dorm.

上大学的时候，有一次我看到一只蟑螂从我宿舍的水槽排水管里爬出来。

Install the toilet flush line, the sink drain, the potable water lines, the bonding jumper, and the control cable.

安装马桶冲水管，洗手池排放，饮用水管，搭地线及控制钢索。