学习导读听得见 · 读得懂

How Smart Traffic Lights Adjust Timing Based on Real-Time Vehicle Flow

智能交通灯如何根据实时车流调整红绿灯时长

How Smart Traffic Lights Adjust Timing Based on Real-Time Vehicle Flow

课文音频

Listen to the full story · 完整逐句/整段音频可在解锁后使用。

您仍可先看下方课文摘要;在阅读器可查看该书试读与权益说明。

课文

从第 4 课起,导读页仅展示部分正文,便于您了解难度与风格。

  1. Cameras and embedded road sensors detect vehicle count, speed, and direction every five seconds.

  2. When more cars approach from the north, the light extends green time for that lane automatically.

Unlock full vocabulary & bilingual guide · 完整课文、逐句音频与全部译文请在解锁学习权益后于阅读器中查看。

Improve faster解锁本课完整体验

词汇与语法扩展

解锁学习权益后,您可在导读页继续浏览全课重点词汇、参考译文与语法提示;听全文、逐句点读与查词建议在阅读器中使用。