This study provides proof that the strength of your cardiovascular system will not spiraldownward to that of a sloth just because you miss an occasional workout.
这一研究证明，您的心血管系统力量不会因为您偶尔错过几次训练而螺旋式下降至向懒人的那样。
3
She was trapped in a downwardspiral of personal unhappiness.