Easy to clean dirty water tank to reduce the growth of bacteria.

易于清洁的污水箱可减少细菌滋生。

youdao

The son found the dirty basket had become clean.

儿子发现脏篮子变干净了。

youdao

I was dirty during my journey, so they must clean me up.

我在旅途中弄得浑身脏兮兮的，所以他们必须要将我清理干净。

youdao

Moreover, a strictly price-based comparison between clean and dirty energy ignores many of the other non-market barriers that must be solved for clean energy to adopted on a meaningful scale, such as regulatory and infrastructure hurdles, issues with intermittency, technology risk, and other barriers.

FORBES: The Carbon Tax, Then and Now

So does black market, or the supposedly clearly distinct clean and dirty money.

NPR: Tracking the World's Black Market: 'Illicit'

In a Chinese farmers market, stooges handed over either clean or dirty notes, then asked for 500g of an extra vegetable.

FORBES: Dirty Cash, Dirty Minds: The Psychological Consequences Of Filthy Lucre