人们发现，一个在智力上始终很活跃的老人，其头脑比一个只干体力活的年轻人还要敏捷。
（It has been found that an old person who has always been mentally active has a quicker mind than a young person who has done only physical work.）
——☂📖摘 中英文对照
人们发现，一个在智力上始终很活跃的老人，其头脑比一个只干体力活的年轻人还要敏捷。
（It has been found that an old person who has always been mentally active has a quicker mind than a young person who has done only physical work.）
——☂📖摘 中英文对照