air oil-less compressor 无油空气压缩机
Less air pollution 更少的空气污染 ; 减少空气污染
Less air pollution here 这里空气污染少
air r oil-less compressor 无油空气压缩机
ADJ If a place is airless, there is no fresh air in it. 不通风的; 无新鲜空气的
...a dark, airless room.
...黑暗不通风的房间。
If that brave action were enough, we would be cheering the advent of cleaner air, less gridlock and billions of dollars for mass transportation.
如果这一大胆的举动能够奏效，我们就可以为更清洁的空气、不再那么堵塞的道路网和公共交通将获得的几十亿美元而欢呼了。
Mars has less gravity. My attempts to walk resulted in jumps and hops, which took me into the air.
VOA: special.2010.07.10
But some operators are less pleased. Loren Rutherford of Nomad Adventure Tours says higher air fares to South Africa have hurt her moderately-priced camping safaris.
VOA: standard.2010.06.03
Although the revised plan involves anti-ballistic missiles installed at a former air base in Poland, defense experts say Moscow perceives the new project as less threatening to its security.
VOA: standard.2009.10.23
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