用one only has to look at造句14字以上

one only has to look at the front when driving the car.

To know how to do the job, one only has to look at the instruction for some minutes.

It is quite simple that one only has to look at it for a moment.

one only has to look at his expression to be able to tell he is lying. 只看他的表情就知道他在说谎。