depth。

depth是英文单词，名词，作名词时意为[海洋]深度；深奥。

deepen名词为depth

例句

1.

Asking juicy questions appears to be a transferable skill for deepening collaborative inquiry into the science content found in exhibits.

提出有趣的问题似乎是一种可以转移的技能，能够深化针对展品中发现的科学内容的协作性研究。

2.

There were plans to deepen a stretch of the river.

曾经有过加深一段河道的计划。

3.

The gloom deepened as the election results came in.

选举结果陆续传来，失败的情绪越来越重。