左转真的是孙子?

Technically, you would not really know what light the other drive would be exactly facing. Guessing lights is not safe generally. :)
一般都能知道,不是猜。
 
左转真的是孙子?



当然不是,向左使永远是大爷!


转过去以后肯定是大爷, 正在转的时候不一定。
 
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