管理员摘要：
例句： They sleep by day and hunt by night. 他们白天睡觉，夜晚捕猎。 He was a loner by nature and by inclination. 他天性不喜交际，且自己也无意于此。 Nocturnal animals sleep by day and hunt by night. 夜间活动的动物白天睡觉晚上猎食。……
例句：
They sleep by day and hunt by night.
他们白天睡觉，夜晚捕猎。
He was a loner by nature and by inclination.
他天性不喜交际，且自己也无意于此。
Nocturnal animals sleep by day and hunt by night.
夜间活动的动物白天睡觉晚上猎食。