He saw a little boy playing on the truck when he got off the train.
下火车后，他看见一个小男孩在卡车上玩。
A train is still faster than a truck.
火车比卡车要快些。
It is also workable to calculate group costs by means of transportation (train, airplane, truck).
这也为交通运输方式（火车、飞机、卡车）中团体成本的运算提供了方便。
The train and the truck are near a tree.
树的旁边有一辆火车和一辆卡车。
The train and the truck are near a tree.
树的旁边有一辆火车和一辆卡车。
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