However,most agencies can't afford those. You have to have a hangar, it costs quite a bit for maintenance and fuel."

VOA: standard.2010.01.01

And so when you start to do this, you can now have a much more portion of your IT spending dedicated to maintenance and sustaining.

所以开始做这件事的时候，很大一部分的信息技术开销,都用于维持和维护了。

斯坦福公开课 - 戴尔CEO-Michael.Dell谈创业和发展课程节选

So it's essential for the maintenance, preservation of the world.

因此祭仪对于维护世界的延续是必不可少的。

耶鲁公开课 - 旧约导论课程节选

"Partly because, while personal counseling and a personal coach might be the Cadillac version of weight loss maintenance, it may not be practical for all people after they've lost weight, whereas if an Internet website can prove to be helpful, something like an Internet website is available.

VOA: standard.2010.07.30