This closed loop is part of a water-supply system in which "every drop counts".

这个封闭循环是供水系统的一部分，“滴滴珍贵”。

youdao

I now formally declare this ~ closed.

我现在正式宣布~结束。

youdao

I now formally declare this ~ closed.

我现在正式宣布~结束。

youdao