5 while doing 的用法疑问

请问老师while在这里是什么用法?

Its Intelligent Transport System tells drivers when roads are crowded, while changing traffic lights and planning alternative routes that drivers can follow.

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陈才   - 英语教师
擅长:中考英语,词法问题

Its Intelligent Transport System tells drivers when roads are crowded, while(it is省略) changing traffic lights and planning alternative routes that drivers can follow.

参考译文:它的智能交通系统在道路拥挤时告诉司机,同时改变交通灯并规划司机可以遵循的替代路线。

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  • zhgy2018   提出于 2024-05-12 19:27