有一天，小火车多多要经过一座长长的桥。
这座桥很高，下面是深深的河水，多多看着就有些害怕。
多多心里想：“我能不能过去呢？我会不会掉下去呢？”
他越想越紧张，轮子也开始打滑了。
这时，旁边的信号灯叔叔看到了多多的困扰，他对多多说：“多多，不要害怕，你可以做到的！你只需要慢慢来，一步一步地前进。”
听了信号灯叔叔的话，多多鼓起勇气，他对自己说：“我可以的！”
然后，他慢慢地开动起来，一点一点地向前移动。
每当他觉得害怕的时候，他就想起信号灯叔叔的话，提醒自己要勇敢。
就这样，多多一步一步地走过了那座长长的桥。
当多多成功到达桥的另一边时，他开心极了！
他知道，只要有信心和勇气，没有什么困难是不能克服的。
从那天开始，多多变得更加自信，无论遇到什么挑战，他都会像那次过桥一样，勇敢地去面对。
One day, little train Duo Duo had to cross a long bridge.
The bridge was very high, with deep river water below, which made Duo Duo a little scared.
Duo Duo thought to himself, "Can I make it across? Will I fall off?"
The more he thought about it, the more nervous he became, and his wheels started to slip.
Then, the nearby signal light uncle saw Duo Duo's distress, and said to him, "Duo Duo, don't be afraid, you can do it! Just take it slow, step by step."
Upon hearing the signal light uncle's words, Duo Duo gathered his courage and told himself, "I can do this!"
So, he slowly started moving forward, inch by inch.
Whenever he felt scared, he thought of the signal light uncle's words, reminding himself to be brave.
In this way, Duo Duo crossed the long bridge step by step.
When Duo Duo successfully reached the other side of the bridge, he was overjoyed!
He knew that with confidence and courage, no difficulty is insurmountable.
From that day on, Duo Duo became more confident, and no matter what challenges he faced, he would bravely confront them like he did when crossing the bridge.
