STEM与日常科技·英语30篇（9）

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电动车如何在刹车时充电

Regenerative braking converts kinetic energy back into electrical energy using the motor as a generator.
When drivers lift off the accelerator, magnetic resistance slows the wheels and spins the rotor.
This motion induces current in copper windings, sending power back to the battery pack.
Energy recovery works best at city speeds—above 40 km/h, friction brakes take over gradually.
Dashboard displays show real-time wattage reclaimed, often 5–15% of total driving energy.
Cold batteries accept less regen charge, so systems throttle output until optimal temperature returns.
Drivers can adjust regen strength: strong mode allows ‘one-pedal driving’ in stop-and-go traffic.
Over a year, regen may extend range by 100–300 km—equivalent to several free fuel stops.

听 → 读 → 学表达 → 懂 → 今天会说这一句 → 跟读录音 → 自己说一句。

Dashboard displays show real-time wattage reclaimed, often 5–15% of total driving energy. 仪表盘实时显示回收功率，通常占总行驶能耗的5%–15%。
Drivers can adjust regen strength: strong mode allows ‘one-pedal driving’ in stop-and-go traffic. 驾驶员可调节再生制动强度：强档模式支持拥堵路况下的‘单踏板驾驶’。
This motion induces current in copper windings, sending power back to the battery pack. 该运动在铜绕组中感应出电流，将电能回馈至电池组。

这篇中文题目最接近哪一句？电动车如何在刹车时充电一次学校运动会的通知一份超市购物清单

课文第一句的意思更接近？再生制动利用电机作为发电机，将动能重新转化为电能。今天学校放假了。请把窗户打开。

这一课主要在讲什么？（看英文标题） What Lets Electric Cars Charge While Braking? How to cook noodles A maths worksheet

Dashboard displays show real-time wattage reclaimed, often 5–15% of total driving energy.

Dashboard displays show real-time wattage reclaimed, often 5–15% of total driving energy.

第一版：录下来、回听、再听标准音。系统打分以后再加。

用今天的表达，自己说一句。

例子：Dashboard displays show real-time wattage reclaimed, often 5–15% of total driving energy.