Used on the surface of coal trains, it can reduce losses of coal and protect environmental pollution.

应用于运煤列车表层，可以明显减少运煤损失和防止环境污染。

youdao

Along this line 20,000-ton coal trains can reach a length of over 7 km pulled by powerful electric locomotives over an extra heavy duty track and driving down operating costs.

大秦线上运行的两万吨运煤列车长度可达7公里，由大功率电力机车牵引，大大降低了运营成本。

youdao

Before long, the trains started burning oil instead of coal.

不久，火车就不再烧煤而改烧汽油了。

youdao

Ironically, coal moves faster on 60 mph unit trains.

FORBES: Big Data Unleashes the Electric Equivalent of a Free Keystone Pipeline

Once the coal is offloaded, some will immediately be sent out via rail freight trains to the Drax power station.

BBC: Largest ship in Port of Tyne brings coals to Newcastle

When one factory lagged unloading a 130-car coal train, he pushed its managers to work Saturdays so that his trains wouldn't sit unused all weekend.

FORBES: Railroads