Moreover, the repetition time-table should be obeyed carefully, as it was computed to suit exactly the requirements of human memory.

另外，要严格遵守重复学习的时间表，因为它是按照人的记忆周期严格计算出来的。

Support weekly repeated alarm clock configuration, and you need to start the weekly repetition time clocks in case of setting this alarm clock.

支持每周重复闹铃设置，实际上你需要对本次闹钟配置也要启动周重复功能。

Go back and listen to the song selection and this time pay attention to the melody and to repetition.

返回，再听一遍选择的歌曲，这次要注意旋律和复唱。