When it's spinning parallel to the ground, support your weight on your left foot and use your right foot to power your spin; the momentum of the hoop should carry you around.

首先从前位站姿开始；让呼啦圈逆时针转起来，当旋转和地面平行的时候，把重心放到左脚上，用你的右脚来给力；呼啦圈的动力会带动你晃动。

youdao

So by parallel we mean - they're either both spin up remember that's our spin quantum number, that fourth quantum number.

所以我们意味着，它们都是自旋向上，记住我们的自旋量子数，是第四个量子数。

youdao

Their goal was less to drive foot traffic to Wabash avenue-which runs parallel to the more popular north-south thoroughfares of State Street and Michigan avenue-than to put a fresh spin on public art.

他们的目标是步行到沃巴什大道—南大道北州街与密歇根大道，而不是在公共艺术的一个新的周旋。

youdao

So by parallel we mean - they're either both spin up remember that's our spin quantum number, that fourth quantum number.

所以我们意味着,它们都是自旋向上,记住我们的自旋量子数，是第四个量子数。

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