To bring additional air filter is very important in order to be replaced.

携带额外的空气过滤器是非常重要的，以便替换。

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Such additional air can be sent preferably upstream of the air heater or in atmosphere upon fines' captation.

这种附加的空气最好在细粒捕集后送到空气加热器上游或大 气中。

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The US is taking additional air security measures in the wake of last month's airliner bomb plot, a senior official has said.

美国一位高级官员称，针对上个月的飞机爆炸阴谋，美国正在采取附加航空安全措施。

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And that in turn leads to additional emissions of harmful pollutants and our area is very concerned about improving air quality as one of the key ways to make our communities even better places to live and work."

VOA: standard.2010.07.26

Legislation in 2007 in both New York and New Jersey empowered the authority to establish one additional air terminal in each state.

WSJ: Port Authority approved to take over AC airport

Charles Isdell, Philadelphia's director of aviation, said it's too soon to predict whether the additional air corridors will have an impact on Thanksgiving delays.

NPR: Americans Take Off for Thanksgiving

He said negotiations are under way over additional air rights.

WSJ: Shvo Revs Up Pace, Again