单词：contrail
音标：['kɒntreil] ；
n. 凝(结尾)迹
n. an artificial cloud created by an aircraft; caused either by condensation due to the reduction in air pressure above the wing surface or by water vapor in the engine exhaust
词型变化：名词复数形式 : contrails
词性分布：
contrail的用法和样例：
词汇搭配
- unidentified contrail未识别飞机的尾迹...
【近义词】
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