Traffic conditions refer primarily to the composition of the traffic stream, particularly the presence of trucks and other heavy vehicles.

交通条件主要指的交通流，特别是卡车和其他重型车辆的存在组成。

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Life is like a stream, all the way through the rocky heavy hairy, eventually into a calm lake.

人生如溪流，一路历尽坎坷崎岖的重重的惊险，最终汇入平静的湖泊。

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These definitions are general and spend on the particular mix of heavy vehicles in the traffic stream.

这些都是一般定义的特殊结构，用于重型车辆的车流。

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KEDO, the American-led consortium supposed to master-mind the project, and which also includes South Korea, Japan and the European Union, has to beg and scrape each year to find the cash for the 500, 000 tonnes of heavy fuel oil promised to North Korea to tide it over until electricity from the two new reactors comes on stream.

ECONOMIST: America and North Korea

Of the five fields that have received approval or come on-stream this quarter, four qualify for the small field tax allowance and one qualifies for the ultra-heavy oilfield allowance.

BBC: Deloitte: Prolonged winter subdued North Sea activity