把这一句，留给此刻的你
If you direct your attention to the position of a bird with regard to the wave surface, it will speedily be noticed to be nearly always on the rising side or face of the wave and moving apparently at right angles to the wave's course, but really diagonal to it.
如果你把你的注意力集中在一只鸟相对于波浪表面的位置上，你很快就会发现它几乎总是在波浪上升的一面或面，而且明显地与波浪的运动方向成直角，但实际上是与波浪成对角线。