v. give a definition for the meaning of a word
v. determine the nature of
v. show the form or outline of
vt. 定义, 规定, 使明确
[计] 定义
1. Can you define what a hero is?
你能定义一下什么是英雄吗？
2. The teacher asked us to define the term "photosynthesis."
老师让我们定义一下“光合作用”这个术语。
3. It is important to define your goals before starting a project.
在开始一个项目之前，定义你的目标是很重要的。