圖片來源：

1、缺口
The children squeezed through a gap in the wall.
孩子們從牆的一個缺口處硬擠了過去。
She has a small gap between her front teeth.
她的門牙之間有條細縫。

gap in the market 市場空白
There is a gap in the magazine market that needs to be filled.
在雜誌市場上還有一個缺口需要填補。

2、差距
The gap between rich and poor is still widening (= becoming greater).
貧富差距仍在繼續拉大。

3、（時間上的）間斷，間隔，間隙
After a gap of five years, Jennifer decided to go back to work full-time.
時隔五年之後，珍妮花決定回去做全職工作。