quotation

The professor used a famous quotation from Winston Churchill to open his history lecture.

(Chinese) 教授在历史讲座开场时引用了温斯顿·丘吉尔的一句名言。

In academic writing, you must always provide a reference for every direct quotation you use.

(Chinese) 在学术写作中，你必须为你使用的每一处直接引语提供参考文献。