Light metal track layers increased trafficability through the heavy ground.

轻金属覆层增加了车辆通过笨重路面时的机动性。

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Officials say the freight train was on the wrong track when it collided with the passenger train during heavy rain.

官员说，这辆货运列车在大雨中与客车相撞时位于错误的轨道上。

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"As we aggressively continue our work on a heavy-lift-launch vehicle, we are moving forward with an existing contract to keep development of our new crew vehicle on track," Bolden said.

“随着我们在重型飞船发射装置上面持续努力的工作，我们按照现有的合同正在取得进展，这使得我们新的载人飞船按照预定的进度进行着，”博尔登说。

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The solution some American states have pioneered is to require higher contributions from companies with a track record of heavy layoffs.

ECONOMIST: The crunch may entrench unemployment

Hamilton set a lap of one minute 25.801 seconds to edge out team-mate Jenson Button by 0.275 secs before a spell of heavy rain hit the Albert Park track.

BBC: Lewis Hamilton fastest in Friday Australian GP practice

"In my whole career, I've never managed to get back on track after such a heavy impact and I'm really happy to still be in the hunt for qualifying, " the Brazilian said.

CNN: Rain ruins F1 qualifying in Melbourne