专家称这可能源于日本完善的卫生保健系统，对老年人保持活力的鼓励，以及常吃鱼肉、米饭和水果的饮食习惯。 。

They say it is down to an excellent healthcare system, encouragement to stay active in old age and a healthy diet made up of fish, rice and fruit.

youdao

专家称这可能源于日本完善的卫生保健系统，对老年人保持活力的鼓励，以及常吃鱼肉、米饭和水果的饮食习惯。 。

They say it is down to an excellent healthcare system, encouragement to stay active in old age and a healthy diet made up of fish, rice and fruit.

youdao