in a spin

基本解释

So many different colours, so many pretty labels, that your head's in a spin?
如此之多的颜色，各种漂亮的标签，让你眼花缭乱？
But it is not the device's successful introduction of the touchscreen into daily life, nor its stylish looks that have the media world in a spin.
但既不是因为它将触摸屏成功引入日常生活，也不是因为它的时尚外观让传媒界发生了兴趣。
NOT since the 1980s, when the nation was in a spin about the coming of the Japanese, has there been such anxiety in America over foreign competition.
自从1980年代整个国家陷入“日本人来了”的恐慌以来，面对国外的竞争压力，美国国内很少弥漫如此的紧张情绪。

And this spin is an intrinsic quality of the electron, it's a property that is intrinsic in all particles, just like we would say mass is intrinsic or charge is intrinsic.
自旋是电子的本征量，它是所有粒子的本征性质，就像我们说质量是本征的或者电荷是本征的。
麻省理工公开课 - 化学原理课程节选
So what that means is that we're limited in any atom to having two electrons per orbital, right, because for any orbital we can either have a spin up electron, a spin down electron, or both.
这意味着在一个原子内,每个轨道上可以有两个电子，对吧，因为对任何轨道,我们可以有自旋向上或者自选向下或者两者都有。
麻省理工公开课 - 化学原理课程节选
You do that eight billion times in your life and you can hit a good top spin backhand.
如果你把这个动作做上八十亿次,那你一定能打个漂亮的反手上旋球
耶鲁公开课 - 聆听音乐课程节选

So why the sudden interest in a spin-off of the seminal '90s soap?
FORBES: Buzz - Forbes.com