One day, the little boy lay on the bed but could't sleep. Looking at the bright moonlight outside the window, he suddenly recalled what the biology teacher once said, plants generally grow at night.
一天晚上,小男孩躺在床上睡不着,看着窗外皎洁的月光,突然想起生物老师曾说过的话:植物一半都在晚上生长。