1
- a division of 3,000-6,000 men, including a complement of cavalry, in the ancient Roman army.古罗马军团（约有3,000至6,000人, 包括一骑兵团）
1.1
the Legion
the Foreign Legion外籍军团。
1.2
the Legion
any of the national associations of former servicemen and servicewomen instituted after the First World War, such as the Royal British Legion or the American Legion（第一次世界大战后建立的）全国性男女退伍军人团体（如英国皇家军团或美国军团）。
2
a legion/legions of
a vast host, multitude, or number of people or things众多, 大批或大量（人或物）：legions of photographers and TV cameras
大量的摄影师和电视摄像机。
词源
Middle English: via Old French from Latin legio（n-）， from legere 'choose， levy'. The adjective dates from the late 17th cent., in early use often in the phrase my， their， etc. name is legion， i.e. 'we， they， etc. are many' （Mark 5:9）.