Parents who routinize child care are minimizing expense and maximizing their control.

使儿童看护规范化的家长最大程度地强化了控制，节约了支出。

《柯林斯英汉双解大词典》

However, efforts to control them are consistently undermined by the difficulty and expense of identifying mosquitoes-of which there are at least 3,500 species, many of them hard to tell apart.

然而，控制这些蚊虫的努力一直没有进展，关键在于鉴别蚊虫的难度和费用——至少有3,500种不同蚊虫，其中有不少很难加以区别。

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However, efforts to control them are consistently undermined by the difficulty and expense of identifying mosquitoes-of which there are at least 3, 500 species, many of them hard to tell apart.

然而，控制这些蚊虫的努力一直没有进展，关键在于鉴别蚊虫的难度和费用——至少有3,500种不同蚊虫，其中有不少很难加以区别。

youdao

Fourth quarter 2011 operating expenses, excluding the cost of equipment sales, remained consistent sequentially and year-on-year as cost savings programs in 2011 helped control expense growth.

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Currently, I see profit margins almost 20 percent above their normalized level, elevated by tight expense control and minimal incremental wage expense.

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Operating margins improved in the third quarter thanks to expense control measures in the company's stores.

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