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contrail
US /'kɒnˌtreɪl/
・
UK /'kɒntreɪl/
A1 初級
n. (c.)
可數名詞
飛行雲 ； 軌跡
影片字幕
諾斯羅普-格魯曼B-2精神號 (Northrop Grumman B-2 Spirit)
43:51
thermal visibility of the exhaust. The original design had tanks for a
contrail
-inhibiting
chemical, but this was replaced in production aircraft by a
contrail
sensor that alerts
B2 中高級
生態系統變化 (Ecosystem Change)
12:19
here is a picture of some
contrail
s that are created.
Contrail
are created when jets fly
B1 中級
