STEM与日常科技·英语30篇（9）

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公交车到达时红绿灯为何会加快切换

City traffic lights use GPS signals from buses to adjust timing in real time.
When a bus approaches within 200 meters, the light extends green by up to 15 seconds.
This system reduces delays and helps buses stay on schedule every day.
Drivers see a small 'BUS' icon flash above the light when priority is active.
The same tech works for emergency vehicles like ambulances and fire trucks.
No special hardware is needed — all city buses broadcast location automatically.
Pedestrian crossing signals pause briefly to let the bus pass safely.
You’ll notice smoother traffic flow on main roads during rush hour.
Engineers test new timing patterns monthly using real traffic data.
Cyclists benefit too because bus priority reduces sudden stops and starts.

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

Engineers test new timing patterns monthly using real traffic data. 工程师每月利用真实交通数据测试新的配时方案。
Pedestrian crossing signals pause briefly to let the bus pass safely. 行人过街信号灯会短暂暂停，确保公交车安全通过。
You’ll notice smoother traffic flow on main roads during rush hour. 高峰时段，主干道车流更顺畅，您将明显感受到。

这篇中文题目最接近哪一句？公交车到达时红绿灯为何会加快切换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？城市交通信号灯利用公交车的GPS信号实时调整配时。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） Why Traffic Lights Change Faster When Buses Arrive How to cook noodles A maths worksheet

Engineers test new timing patterns monthly using real traffic data.

Engineers test new timing patterns monthly using real traffic data.

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：Engineers test new timing patterns monthly using real traffic data.