When Mary broke off the engagement, John seemed to go into a flat spin.

玛丽毁除婚约，约翰似乎神经失常。

《新英汉大辞典》

I've been in a flat spin trying to get everything ready for our holiday.

所有这些米制单位弄得我晕头转向——我们为什么不能坚持用英尽和英寸的单位呢？

youdao

When Mary broke off the engagement, John seemed to go into a flat spin. He was hardly ever sober for three months.

当玛丽毁掉婚约时，约翰好像完全失去了自我，3个月时间里他几乎没有清醒的时候。

youdao