It costs even less to retrofit existing facilities to keep their services running at critical times.

甚至比改造现有设施，使其在危急时刻保持服务运转所需的费用还要少。

youdao

Milestones are defined at critical execution points and key roles for meeting each milestone are identified and assigned.

在重要的执行点上定义了里程碑，并且为了符合每个里程碑的要求，标识和分配了一些关键角色。

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Blades: Light, stiff carbon fiber replaces fiberglass at critical points in the blades, so they lose pounds and gain strength.

风叶特点：风叶的关键部位由轻质、强度高的碳纤维替代传统的玻璃纤维，结果是重量得到减轻而强度却增加了。

youdao

"When we look at counterinsurgency the first and critical step is to separate the enemy from the people,"

VOA: standard.2009.12.08

These prophets delivered their oracles at critical junctures in Israel's history, in the nation's history, so their words are only going to make sense to us if we first understand the particular historical crises that they are addressing.

这些告知发表预言，总是在一些关键的转折期,在以色列历史中，国家的历史中，因此他们的话只对我们有意义,如果我们首先懂得某些特别的历史性危机,先知们所提到的。

耶鲁公开课 - 旧约导论课程节选

And not be too critical or expect that you should be at a very high level when you're just beginning.

不要太挑剔，也不要奢望自己刚开始的时候就可以达到很高的水平。

学外语的时候 - SpeakingMax英语口语达人

The river ferry would not have survived without new private investors at critical times, however.

ECONOMIST: Thames river transport

He went for big second serves at critical junctures, at three different times, to lose the match.

BBC: The BBC team on Djokovic's defeat

Gates have been installed at critical canals to help block water from entering the city during storm surges.

CNN: Today's New Orleans a tale of two cities