Flights go quicker if you strike up a conversation with your fellow passenger.

坐飞机的时候跟你身边的人聊天时间会过得更快一些。

I remarked to a fellow passenger on the us flag flying outside almost every house.

我提醒一位旅伴看，差不多每幢屋子外面都飘扬着美国国旗。

A key witness in the case, a fellow passenger, gained access to it after pressuring a ticket inspector.

本案关键证人之一、一位同车的旅客在向一个查票员施压后才用上了这个厕所。

Talk to a stranger, a fellow passenger on a train or your child-hood crush, they won't mind (I'm not sure about your crush, though).

去和陌生人、一起坐火车的乘客或者童年时的女神/男神交谈，他们不会介意的（不过我不确定你的女神/男神介不介意）。