a diurnal animal的用法和样例：
- A diurnal animal hunts its food during daylight.
- A diurnal animal hunts its food during daylight; while a nocturnal animal hunt s at night
- Diurnal animals are active during the day.
- Such laws may be only the start, and local night curfews will not stop cats from eating diurnal animals, say Paton.
- A diurnal temperature variation of-4k is present at 50km because heating only occurs during the day.