air line cleaner ==> 风管式净棉器 air line distance ==> 航空线距离,空间直线距离,空气管路距离,架空线路距离 ..
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air cleaner line 空气滤清器管路
air cleaner service indicator line 空气滤清器维护指示器管线
The Lantern is on the scene at the Olympics, and he'll start with the good news: Compared with a year ago, the city's air does feel cleaner, and newly planted trees and shrubs line the streets.
Lantern正在出席奥运会，并且他会以一个好消息来开场：与一年前比，城市的空气确实感觉更干净了，街边也新种植了树木以及花花草草。
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