The crucial stage of development in which you can change the directionof the spiral turned out to be surprisingly early on.
研究发现,能使螺旋方向改变的关键阶段早的令人惊讶。
2
Some species of snail have shells that spiral out in an anticlockwise direction, but it is much rarer.
有些种类的蜗牛有着从里到外逆时针的螺壳,不过这少见的多。
3
However, it turned out that towards the North Pole of the Milky Way counterclockwise rotation among spiral galaxies is dominant, that is, they are oriented in the right direction.