a certain amount of

基本解释

Normally, test cases have a certain amount of set up work.
通常，测试用例需要执行一定数量的设置工作。
I like to imagine time as if you are given a certain amount of tickets at birth.
我喜欢把时间想象成是在出生时就得到的门票，它们的数量是一定的。
Yes, once your screen says that you have donated a certain amount of rice, that means our servers have registered it.
算数的，只要你的屏幕显示你已经赠了一定数量的大米，就意味着我们对此已经有记录。

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