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1·In areas with heavy automobile traffic, however, the seed germinates in the absence of fire, with automobile exhaust supplying the required nitrogen dioxide.

然而，在汽车交通繁忙的地区，种子在没有火灾的情况下借助汽车尾气提供所需的二氧化氮发芽。

2·Automobile exhaust make water pollution.

汽车尾气的排放污染了水。

3·Automobile exhaust is a major factor in pollution.

汽车尾气也是污染的重要因素。

4·Main source: coal-fired power plants and automobile exhaust.

主要来源：汽车尾气和燃煤发电厂。

5·The strong fumes of the automobile exhaust nearly choked him.

汽车排的强烈臭气几乎使他窒息。

6·Automobile exhaust fumes are one of the major caueses of smog.

汽车排出的烟是造成烟雾的主要原因之一。

7·Automobile exhaust tetraethyl lead is a highly toxic substance.

汽车尾气中的四乙基铅是剧毒物质。

8·Catalyst technique is the major way to purify automobile exhaust gas.

催化剂是当前控制汽车尾气的主要手段。

9·So it is the most important to control automobile exhaust gas pollution.

因此，控制机动车尾气污染是当务之急。

10·The state of automobile exhaust pollution in the Kunming area was investigated.

本文调查了昆明市机动车废气污染情况。