squadron
/ˈskwɒdrən/noun
1- an operational unit in an air force consisting of two or more flights of aircraft and the personnel required to fly them（空军）中队。
1.1
- a principal division of an armoured or cavalry regiment, consisting of two or more troops（装甲团的）连; （骑兵）中队。
1.2
- a group of warships detached on a particular duty or under the command of a flag officer（海军）中队。
1.3
- informal a large group of people or things〈非正式〉一队; 一群：
he immediately commissioned a squadron of architects.
他立即委托了一群建筑师。
词源
mid 16th cent. (originally denoting a group of soldiers in square formation)： from Italian squadrone, from squadra 'square'.