In 1 second, the impacts of the molecules against the speck would be nearly equal in all directions.
在一秒钟内, 分子从各个方向对微粒的撞击将几乎相等。

A speck of snow, an inch of ice, the force of the wind, can determine the result of a race or a game.
一个雪斑点，一英尺的冰，风速 均可以影响到比赛的结果

Any speck of dust or dirt inside the tube assembly will end up on the films emulsion side during the exposure.
镜筒里的灰尘最后总是会粘在胶片上

The earth was green, the sky was blue. I saw and heard one sunny morn, A skylark fly between the two, A singing speck above the corn.'
翠绿的大地，蔚蓝的天空。一个阳光和煦的早晨，我看见，听到一只云雀飞翔在蓝天碧野之间，像麦田上空一个会歌唱的斑点。'

As they look back towards Earth, our planet gradually diminishes to become just one more speck amid a lacy network of galaxies in space.
当参观者回头遥望地球时，会发现我们居住的星球越来越小，最后在带有花边的太空星系网络中化为一个小斑点。