(4200期)早上还是下午学习 Do you prefer studying in the mornings or afternoons

选择 prefer choose go with tend to 中午 Lunch time Lunch break 集中注意力 Pay attention to Stay focused on 一次 At a time 糟心的一天 A hard day or evening 熬夜 stay up late 之前一天 the day before  半夜 midnight In the mid of the night 充满干劲儿 Be full of energy or something