in depth和in-depth的区别

in depth做状语，in-depth做定语

例句

1、

We will discuss these three areas in depth

我们将深入探讨这3个领域。

2、

The movement is developing in depth.

运动正在深入发展。

3、

The oil well extended several hundreds of feet in depth.

油井向下延伸了数百英尺。