a certain amount of

基本解释

Normally, test cases have a certain amount of set up work.
通常，測試用例需要執行一定數量的設置工作。
I like to imagine time as if you are given a certain amount of tickets at birth.
我喜歡把時間想象成是在出生時就得到的門票，它們的數量是一定的。
Yes, once your screen says that you have donated a certain amount of rice, that means our servers have registered it.
算數的，衹要你的屏幕顯示你已經贈了一定數量的大米，就意味著我們對此已經有記錄。

"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.
雅各佈·米爾格羅姆認爲,這裡存在著一種阿基米德原理：,每一種罪孽都會造成不潔,這種不潔逐漸蠶食神聖,慢慢取代神聖的位置。
耶魯公開課 - 舊約導論課程節選
It's actually better to spend a certain amount of time just keeping your body in good condition
其實花一定時間保持身躰的良好狀態更好，
健康生活 - SpeakingMax英語口語達人

Maybe it takes a certain amount of meanness to be successful, at least in business.
FORBES: Study: More Money Makes Managers Meaner