小火车在英语中可以称为 "Little Train" 或 "Toy Train"。其来源可能源于玩具火车的英文名称。

例句：

My son loves playing with his little train. 我儿子喜欢玩他的小火车。

The toy train chugged around the track. 玩具火车在轨道上嘎嘎声地绕行。

The little train was a big hit at the party. 小火车在派对上大受欢迎。