n.

1. 分離；分開[U]
   The wreck was caused by the detachment of two cars from the train.

   那次失事是因兩節車廂與火車脫開造成的。

2. 派遣[U]
3. 分遣隊；特遣艦隊[C]
   A detachment of ten men remained behind to guard the prisoners.

   由十名士兵組成的分遣隊留在後面看守囚犯。

4. 超脫；公平無私，不偏不倚[U]
   He was unable to examine the issue with detachment.

   他不能客觀公正地調查這一問題。

n.

1. the state of being objective or aloof.
2. Military  a group of troops, ships, etc. sent away on a separate mission.
3. the action or process of detaching.