vt.

1. 扩大；扩展
   The house was enlarged with a new wing.

   增建的厢房使房屋扩大了。

2. 放大（照片）
   I asked the photographer to enlarge the picture.

   我请摄影师把那张照片放大。

3. 【美】释放

vi.

1. 扩大
2. 详述[（+on/upon）]
   Could you enlarge upon your plan?

   你能否详细谈谈你的计划？

v.

1. make or become bigger.
2. (enlarge on/upon) speak or write about in greater detail.