Public spending must be kept within reasonable bounds.

公共开支必须控制在合理的范围内。

《牛津词典》

While kept within its due bounds it is both beautiful and useful.

如果控制在应有的范围内，它既美丽又有益。

youdao

Second, when the form of collecting fees is being used, it is not kept within the bounds of legal system and budget control, and thus the disorderly condition of overcharging occurs.

二是在运用收费形式时，未能将其纳入法制化和预算管理的正常轨道，以致收费出现过多过滥的无序化状态。

youdao

And, mirabile dictu, their shareholders managed to ensure that bankers' bonuses were kept within modest bounds.

ECONOMIST: The least-bad rich-world economy

Tendentious though the article was, it kept, just, within the bounds of propriety.

ECONOMIST: Bagehot