Please disconnect the pipe ends and flush it with water.

管路末端要拆下来并且用水把里面的垃圾冲干净。

youdao

I remember I did flush it. (he went to the bathroom to flush the toilet.)

我记得我是冲了。(他走进厕所，冲洗马桶)。

youdao

The passing of water or other liquid through a filter in the reversedirection to normal flow in order to flush it clean;

水或其他液体从正常流向的反方向流过一个过滤器，将其冲洗干净；

youdao

Even if your doctor could get the drug directly into the bladder, you would naturally flush it out within a few hours.

FORBES: TARIS Biomedical Keeps Delivering Drugs Direct-to-the-Bladder

If the industry had employed some of these principles earlier, back when it had flush margins, it might have been able to invest in innovations that could sustain better journalism today.

FORBES: Richard Scudder, Newspaperman, Dead at 99

Unless you are particularly flush, it is probably best to skip this bit: the massages are brief and often lack finesse, and the oils are hardly deluxe.

BBC: A guide to Istanbul��s bath houses