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。
People who have a greater sense of purpose usually have better physical and mental health, which in turn explains their higher-quality sleep.
对于如何更好地提高课堂质量，学生们的评价通常是坦率、直白的。
The students were generally frank and direct in their comments on how course work could be better presented.
研究人员认为，吃早餐有助于减少每天的卡路里摄入，改善我们的饮食质量，因为早餐食品通常含有较多的膳食纤维和营养。
The researchers argued that breakfast helps reduce daily calorie intake and improve the quality of our diet—since breakfast foods are often higher in fiber and nutrients.
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