in - depth和in－depth的區別

in depth做狀語，in-depth做定語

例句

1、

We will discuss these three areas in depth

我們將深入探討這3個領域。

2、

The movement is developing in depth.

運動正在深入發展。

3、

The oil well extended several hundreds of feet in depth.

油井向下延伸了數百英尺。