illustrate
US /ˈɪl.ə.streɪt/
UK /ˈɪl.ə.streɪt/

1.
阐明, 说明
to explain or make clear by using examples, charts, pictures, etc.
:
•
The speaker used a diagram to illustrate his point.
演讲者用图表来阐明他的观点。
•
Let me give you an example to illustrate what I mean.
让我举个例子来说明我的意思。