I still do a certain amount of work for them.

我仍旧为他们做一定数量的工作。

《柯林斯英汉双解大词典》

You have to allow for a certain amount of error.

你必须考虑到一定数量的错误。

《柯林斯英汉双解大词典》

A certain amount of flexibility is built into the system.

该体系加入了一定的灵活性。

《牛津词典》

"There is a certain amount of that islander style there," Ken Walsh of the magazine USNews and World Report.

VOA: standard.2010.01.16

Jacob Milgrom has argued that there's a kind of Archimedean principle at work here: every sin creates an impurity that encroaches upon the realm of holiness and displaces a certain amount of holiness.

雅各布·米尔格罗姆认为,这里存在着一种阿基米德原理：,每一种罪孽都会造成不洁,这种不洁逐渐蚕食神圣,慢慢取代神圣的位置。

耶鲁公开课 - 旧约导论课程节选

It's actually better to spend a certain amount of time just keeping your body in good condition

其实花一定时间保持身体的良好状态更好，

健康生活 - SpeakingMax英语口语达人

Maybe it takes a certain amount of meanness to be successful, at least in business.

FORBES: Study: More Money Makes Managers Meaner

For example, it suggests requiring executives who earn more than a certain amount to donate to charity.

FORBES: Study: More Money Makes Managers Meaner

No one doubts that a certain amount of liquidity needs to be injected into the economy.

FORBES: Bush's Plan: Too Much, Too Soon