If you're a lark, apt to wake as early as 6am and go to sleep around 9pm or 10pm, you're going to feel your nap need around 1pm or 1.30 pm.

如果你是云雀型的，你往往在早上6点起床，在晚上九十点钟睡觉，你会在下午1点到1点半觉得想睡午觉。

youdao

His chemistry teacher at school was understanding, allowing him to lark around with apparatus, just within the limit of danger and expulsion, at the back of the class.

ECONOMIST: Paul Lauterbur, father of MRI, died on March 27th, aged 77