However, for the problem of environment pollution and energy shortage, there are still existing some problems to be solved.

但在诸多方面仍存在着很多难题亟待解决，以更有效地缓解当今环境污染和资源匮乏问题。

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Some economists believe that rigorous enforcement of existing equal pay laws would substantially decrease this wage inequity.

一些经济学家认为，严格执行现有的同工同酬法将大幅减少这种工资不平等。

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Some water experts are now demanding that existing infrastructure be used in smarter ways rather than building new facilities, which is increasingly considered the option of last, not first, resort.

一些水资源专家现在在要求要更明智地使用现有的基础设施，而不是建造新的设施，它逐渐被认为是最后而不是第一选择。

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Some nations have enough foreign currency reserves, but others will struggle to find new financing to pay their existing debts.

VOA: special.2009.03.13

You could imagine a protein that's existing inside a cell at some level of abundance.

想像一下,在细胞中有一种大量存在的蛋白

耶鲁公开课 - 生物医学工程探索课程节选

Treasury Secretary Tim Geithner says the financial crisis developed in part because the existing system let some companies "shop for the weakest regulator."

VOA: special.2009.06.19

Instead of simply shutting the other 22 bosses in London made sure they invested in rehabilitation services - some at the existing hospitals, some at new facilities - close to people's homes so that the public knew there would still be services available locally.

BBC: Closing NHS services: the impossible job?

When Chevy launched Confidence, it also eliminated or trimmed significantly some existing incentive programs.

FORBES: Lost 'Confidence': Ewanick's Final Move Isn't Working Out

Under some existing schemes, a percentage of the company's profits is given to a local village.

BBC: Herbal medicine