Definition
Used before a noun to indicate something that is difficult to describe or quantify precisely.
某种，某一
The movie possesses a certain indefinable charm that captivates the audience.
这部电影拥有一种难以形容的魅力，吸引了观众。
She exudes a certain air of nobility that leaves a lasting impression.
她散发出一种高贵的气质，令人印象深刻。
There is still a certain degree of risk involved in the implementation of this project.
在实施这个项目时仍然存在一定程度的风险。