con·trail
noun/ˈkɒntreɪl/
/ˈkɑːntreɪl/
(especially North American English)- 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 - Contrails crossing clear skies can form beautiful patterns.
穿过晴朗天空的轨迹可以形成美丽的图案。
- Contrails crossing clear skies can form beautiful patterns.