vt.

1. 縮回，縮進（爪，舌等）
   A cat can retract its claws.

   貓能縮進爪子。

2. 撤回，收回（聲明，諾言等）

vi.

1. 縮回，縮進
2. 撤銷，收回

v.

1. draw or be drawn back or back in.
2. withdraw (a statement or accusation) as untrue or unjustified.
   ▸withdraw or go back on (an undertaking).