What's wrong?This trolley bus and the one going the other way passed by each other just a little while ago, didn't it?That's a good question...How about you come by my room tonight?Trolleybuses are powered by two electrical lines, right?I was just wondering how those diverge.
You'll get a short here if you don't do something.
Uh-oh...
These exchange points are mysteries too.
It's tough to explain verbally.
I get the feeling I've knocked on a door I shouldn't have...
