People who have a greater sense of purpose usually have better physical and mental health, which in turn explains their higher-quality sleep.
目标感更强的人通常身心更加健康，这反过来解释了他们睡眠质量更高的原因。
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Such improvements allow our hens to forage for higher-quality natural feed that will be good for the land, the hens, and the eggs that we supply to our customers.
Panera Bread, an American fast-food chain known for its fresh ingredients, performed well, too, because it offers higher-quality food at lower prices than restaurants.