There was only one seat free on the train.

火车上只有一个空座。

《柯林斯英汉双解大词典》

On top of this, lawmakers get 40 round trips a year to their constituencies and free train travel, as well as pension benefits that accumulate twice as fast as those of civil servants.

最甚的便是，立法委员每年能到其选区巡览40多次，而往返的列车费用可以全免。而他们退休金累积也是文职公务员的两倍。

youdao

Based on the introduction to neural network principle, two methods of solving free train schedule and traffic flow prediction in transportation system with neural network are analyzed.

在简要介绍神经网络原理的基础上，分析了采用神经网络解决交通系统中空车调度及交通流预测的原理及方法。

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But because he had no money, he would jump on the train's boxcars and ride for free.

VOA: special.2010.06.13

The woman was able to free herself when a passenger on the train used an emergency release.

BBC: Metro train dragged woman by the arm - report

She said people on the train had been provided with free food and drink.

BBC: East Coast rail line disrupted by signal failure

The Batistas gave O'Callaghan free range to develop new products and packaging and to train employees on food safety and different regulations.

FORBES: Magazine Article