but you can sort of tell that the particle is moving slowly or rapidly by looking at the space in between these tick marks.

但你可以通过观察计时点之间的距离,来判断该物体运动的快慢

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People have referred to this as a J shaped curve with this little up tick in the left hand side and people--some people have sort of said, well maybe it's not so bad to be overweight because it's not so good to be underweight as well and that's a problem.

人们把这称为J形曲线,最左边有一个向上的弯钩,因此就有人说,也许超重也不一定就是一件坏事,因为体重过轻也不是什么好事,这是个问题

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