But it also has a second purpose-to keep the whole system clean.

另外它还有一个功能——保持整个系统的清洁。

youdao

Prevents formation of deposits and keeps the braking system clean.

高沸点能防止煞车系统中形成的蒸气，提高煞车系统的效能。

youdao

Effects of formula, no sludge production and effectively prevent the color degradation, maintaining the hydraulic system clean.

特效配方，绝无油泥产生并有效防止色调退化，保持液压系统高度清洁。

youdao

But IMF official Marek Belka says Europe also must clean up its banking system.

VOA: standard.2009.04.24

He said more needs to be done to clean up the banking system.

VOA: standard.2009.04.26

But that does not mean he has given the new system a clean bill of health.

BBC: Don't forget tomorrow's nurses

Blaming the fact that staff used Linux operating systems on their production machines for "not noticing sooner", it advised concerned users to load some up-to-date antivirus software and "make sure your system is clean".

BBC: Scareware launched from tech blog

Do I want to invest in our people, in our middle class and making it stronger, and our infrastructure and our education system and clean energy -- is that one vision or are we just going to keep on doing the same things that got us into this mess in the first place?

WHITEHOUSE: Discussing the Economy in Albuquerque