名词
中文翻译：火车总重量
同义词：
['total train weight', 'gross weight of a train', 'gross weight of a train carriage']
例句：
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1. The train was carrying a cargo that weighed over 50 tons.
这列火车载着超过50吨的货物。
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2.The railway company has announced plans to upgrade the track for better efficiency.
铁路公司宣布了升级轨道的计划，以提高效率。
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3.The train's gross weight is an important factor in determining its fuel consumption.
火车的总重量是决定其燃油消耗的一个重要因素。