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。
In areas with heavy automobile traffic, however, the seed germinates in the absence of fire, with automobile exhaust supplying the required nitrogen dioxide.
我们拥有五辆配有红外技术的卡车，用来修复柏油路面，大多数是那些交通繁忙的路段。
We own five trucks equipped with infrared technology, which we use to restore asphalt surfaces, mostly on heavily traveled roads.
在20英里的慢骑旅程中也有障碍，从穿过交通繁忙的马路，到避开对我车铃充耳不闻的狗狗。
During the slow-going 20-mile ride there had been hazards, from crossing busy roads to swerving to avoid dogs who ignored my agitated ting-a-ling.
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