I have children to support, money to be earned, and a home to be maintained.

我有一群孩子要供，要赚钱，还要养一所房子。

《柯林斯英汉双解大词典》

And all these services have to be maintained...

而所有这些服务还都是必须维护的。

youdao

That isn't a static picture that has to be maintained.

这不是一个非得人工维护的静态图。

youdao

"For our European welfare state to be maintained there have to be changes.

VOA: standard.2010.06.24

When the Financial Accounting Standards Board listens to what corporations are saying and helps them-- it adjusts these standards from time to time but it does have definitions that have to be maintained.

财务会计准则委员会,听取公司的意见并协助他们...,并且适时调整标准,不过有些规则始终如一

耶鲁公开课 - 金融市场课程节选

And he argues that indigent citizens, who are unable to provide for themselves, should not be forced to rely simply upon the private charity of individuals but should be maintained at public expense.

对于那些因贫困而无法养活自己的人，他却认为不能让他们，完全依靠私人的慈善救济过活,而应当用国家公共支出,建立相应的保障来维持他们的生活。

耶鲁公开课 - 政治哲学导论课程节选

But other phenomena that look like diseases are known to be maintained by natural selection.

ECONOMIST: Psychopathy

"The constitutional rules of the game need to be maintained even in difficult times, " he said.

BBC: Constitutional issues could stop Merkel buckling

She said progress had to be maintained if the 15% target was to be met.

BBC: Teenage pregnancies fall again