swimming is good for our health,especially for our l______and h_____.
问题描述:
swimming is good for our health,especially for our l______and h_____.
答
lungs heart应该是这个两个吧,心肺功能好
答
只想到一个lungs,肺,要用复数,因为肺不止一片
答
lungs hearts
对心肺功能有好处