体重增加

The baby doubled its weight in a year.

那婴儿一年中体重增加了一倍。

It is possibile that reduced slumber affects the number of calories burned while at reast( basal metabolic rate) and translates into weight gain over time.

可能是不充足的睡眠导该在睡眠过程中消耗的卡路里（热量）到了影响，因而导体重增加。