If you have ever driven with a back-seat driver, you know how annoying it can be. That person - who isn't driving, and may not ever drive at all - will tell you exactly how to proceed, and what you are doing wrong. They will criticize everything from the route you are taking, to the point at which you turn on your blinker, to your speed, to the condition of the vehicle. If you are dealing with someone like this now in your personal life, it can be extremely frustrating. This person has a lot of criticism, but they are not driving - you are. Tune them out, and you'll have a better ride. 如果你曾经有在开车时遇到爱指导驾驶的乘客，你就会知道这会是多麽的烦人。 那个不开车的人(也许从来没开过车)，会告诉你如何行进，告诉你做错了什麽。 他们会批评你采取的路线、打方向灯的点、你的速度，所有车辆的一切。 如果你现在生活中正有这种人，这可能会是让人非常沮丧。 这个人有很多的批判，但是他们不驾驶，而你要开。 把他们驱离，你将会有更好的旅程。 -- --

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