n.

1. 适应，适合[U][S1]
   He made a quick adaptation to the new environment.

   他很快适应了新的环境。

2. 改编，改写；改写本[U][C]
   This play is an adaptation of a novel.

   这一剧本是由小说改编的。

3. 【生理】适应性的变化，适应作用[C]

n.

1. the action or process of adapting or being adapted.
2. a film or play adapted from a written work.
3. Biology  a change or the process of change by which an organism or species becomes better suited to its environment.