城市汽车小队 · 4-8 岁

动车组怎样一起跑

一节一节车厢的合作旅行

科普启蒙约 8 分钟4-8 岁中英双语

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安安和妈妈要去看望外婆。站台上，一列动车组一节接一节排着，安安问：“这么长的列车怎样一起跑？”

An'an and Mom were taking a train to visit Grandma. On the platform, a train set stretched car after car. An'an asked, “How can such a long train move together?”

安安和妈妈要去看望外婆。站台上，一列动车组一节接一节排着，安安问：“这么长的列车怎样一起跑？”

An'an and Mom were taking a train to visit Grandma. On the platform, a train set stretched car after car. An'an asked, “How can such a long train move together?”

车厢之间有结实的车钩，也有让乘客走过去的连通门。它们把一节节车厢连成一个会旅行的大家庭。

Strong couplers join the cars, and passage doors let passengers walk between them. The cars become one traveling family.

动车组不只靠最前面的车头。几节车厢底下装着电动机，力量分散在列车中间，大家一起推动车轮。

A multiple-unit train does not rely only on the front. Motors beneath several cars spread the power through the train and help turn the wheels together.

车顶的受电弓从接触网上取来电能。电能经过设备分配到不同车厢，像一条有秩序的能量小河。

Pantographs on the roof collect electricity from the overhead line. Equipment shares it among different cars, like an orderly little river of energy.

司机发出出发指令，控制系统把速度变化传给整列车。前后车厢像听见同一个节拍，一起平稳加速。

When the driver gives the departure command, the control system shares the speed change through the whole train. The cars accelerate smoothly to one common beat.

车厢之间的连通处会轻轻活动，悬挂和空气弹簧帮助车身保持平稳。安安端着水杯，水面几乎没有摇晃。

Flexible connections, suspension, and air springs help the cars stay steady. An'an held a cup, and the water barely rippled.

列车进入弯道，轨道和控制系统让每节车厢沿着同一条路线转弯。安安发现，长长的队伍也能配合得很整齐。

As the train entered a curve, the track and control systems guided every car along the same route. An'an saw how a long line can turn together.

进站前，系统先让车速慢下来，车门只有在停稳后才会打开。安安站在黄线后，等妈妈一起上车。

Before entering the station, the system slowed the train. Doors opened only after it stopped completely. An'an waited behind the safety line and boarded with Mom.

维修基地里，工作人员检查车钩、车轮、受电弓和车门。每一处都确认正常，动车组才会再次出发。

At the maintenance depot, workers checked the couplers, wheels, pantographs, and doors. The train set would depart again only after every part was confirmed safe.

在车厢里，大家把行李放稳、坐好或扶好扶手。安安说：“乘客也能帮动车组保持平稳。”

Inside the cars, passengers stored bags securely and sat down or held the handrails. An'an said, “Passengers can help the train stay steady too.”

安安玩“动车组数一数”：数车厢、找车钩、看车顶的受电弓，再想想哪些车厢在提供动力。

An'an played “Count the train set”: count the cars, find the couplers, spot the roof pantographs, and imagine which cars provide power.

动车组把许多节车厢的力量和心跳连在一起，带安安到了外婆的城市。安安说：“一起配合，就能走得又稳又远！”

The train set joined the strength and rhythm of many cars and carried An'an to Grandma's city. “Working together helps us travel far and steady!” An'an said.

动车组靠车厢连接、分散动力、统一控制和细心检修一起工作；旅途中每个人也要遵守站台和车厢规则。

A train set moves through connected cars, distributed power, shared control, and careful checks. Passengers also help the journey by following platform and onboard rules.

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