a lean diet

• 粗食

a lean diet的用法和样例：

例句

1. The person who has sluggish intestinal muscles may be helped by moderate excise, an increase in vegetables and other bulky foods in the diet and an increase in fluid intake.
   对肠肌蠕动很慢的人，适量运动，多吃蔬菜和粗食，多喝水可能有所帮助。