contrail
contrail 英 ['kɒntreɪl] 美 ['kɑn,trel]
n. 凝结尾；航迹云；凝迹（飞机飞过留下的尾迹）
名词复数:contrails
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- n. 凝结尾；航迹云；凝迹（飞机飞过留下的尾迹）
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1. contrail requires users to opt-in if they want to receive information from friends.
Contrail系统允许用户双向选择是否从好友获得信息。
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2. Update at 8:05 a.m. ET, Nov. 11: contrail Science now says the next time the flight's scheduled to fly over the coast is Friday evening.
11月11日美国东部时间早上8点05分更新：Contrail Science 发布的最新消息说， 按照该航班的航次安排，下次飞越这个海岸上空的时间是星期五晚上。
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3. After a thorough investigation, many experts now believethat the streak was a – wait for it – a run-of-the-mill jet aircraft contrail that happened to hang around longer than usual.
在经过彻底调查以后，许多专家认为所看到的线条是——等着——是一个运行着的米尔喷气飞机轨迹，它偶然发生，比平常有较长的流连时间。
- contrail (n.) "white line of ice crystals behind an airplane in motion," 1945, from condensation trail (1942); see condensation.
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