The army has been sent in to maintain order in the capital.

军队被调进首都维持治安。

《牛津词典》

Security forces are allowed to use what's called "necessary force" to maintain order and can search people and premises without a warrant.

安保部队被允许使用所谓的“必要武力”来维持秩序，他们可以在没有搜查令的情况下搜查人员和房屋。

youdao

Maintain order and discipline in town and country.

维持城镇、乡村的秩序和纪律。

youdao

(Speaking) He says police used to work to maintain order in the city, but now they working to meet the needs of the people.

VOA: standard.2010.01.26

He would remain a virgin in order to prepare for and to maintain this incredibly important role as an epic poet.

他想保持自己的童贞,为了准备和保持作为史诗诗人这个无比重要的角色。

耶鲁公开课 - 弥尔顿课程节选

In order for life to proceed, you need to maintain a constant internal environment.

为了维持生命,人体的内环境需要保持稳定

耶鲁公开课 - 生物医学工程探索课程节选

He assured the public that "all the precautions will be taken" to maintain order.

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People observe a queue because they know what behaviour is expected of them to maintain order.

BBC: Who, what, why: How to get off a busy train

They learn to do, or not to do, certain things in order to maintain order.

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