n.

1. 深度，厚度[U][C][S1]
   The young man dived to a depth of 40 feet.

   那個青年人潛到四十尺的深度。

   The ice is ten feet in depth.

   冰有十英尺深。

2. （色澤）濃度；（音的）低沉[U][S1]
3. （知識等的）深奧；（感情等的）深厚[U][S1]
   We have expressed the depth of our gratitude to them.

   我們向他們表示了深切的謝意。

4. 深處；深淵[the P]
   Scientists used to believe that there was no life in the depths of the ocean.

   科學家過去認為海洋深處沒有生物。

   He ventured into the depths of the forest.

   他大膽地走進樹林深處。

5. 中間部分；最強烈部分[the P]
   An air-raid alarm sounded in the depths of night.

   深夜響起了空襲警報。

n.

1. the distance from the top or surface to the bottom of something or to a specified point within it.
   ▸the distance from the front to the back of something.
   ▸the apparent existence of three dimensions in a two-dimensional representation.
2. the quality of being intense or extreme.
   ▸complexity and profundity of thought.
   ▸comprehensiveness of study or detail:

   third-year courses go into more depth.
3. (the depths) the deepest or lowest part of something.