The research team assessed sleep time and REM cycles, and the subjects self-rated their sleepiness every evening and morning.

研究团队会对睡眠时间及周期进行评估，而受试者每天早晚也要自我评估睡眠质量。

It is difficult to know whether to assess her time as Empress, Archduchess and Queen as a success or not.

很难知道她作为皇后、大公夫人和王后的经历是否成功。