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   English
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lighter than air
gen. 比空气轻的飞行器
avia. 轻于空气的
earth.sc. 比空气轻
oil 轻于空气
lighter-than-air
gen. 比空气轻的飞行器
 English thesaurus
Lighter Than Air
abbr., scottish LTA
lighter than air: 1 phrase in 1 subject
Refrigeration1