[TOP]vapour trail 'vapour trail (BrE) (NAmE'va·por trail) noun the white line that is left in the sky by a plane (飞机在高空留下的)水汽尾迹,凝结尾迹,拉烟 [TOP]vapour trail 'vapour trail noun [C] [BrE] ; vapor trail [AmE] 1. the white line that is left in the sky by a plane 〔飞机在高空飞行时产生的〕雾化尾流 [TOP]vapour trailUK (ALSO US vapor trail) noun countable » water vapour that looks like a line of white smoke behind an aircraft as it flies （飞机飞行时留下的）凝结尾迹，拉烟 [TOP]vapour trail
in AM, use 美国英语用 vapor trail
1.N-COUNT 可数名词 （飞机、火箭或导弹的）雾化尾迹，拉烟 A vapour trail is a white line of water vapour left in the sky by an aeroplane, a rocket, or a missile.