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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问题会随之减少，但是在这个发达的系统里，我们不可能依靠一些人的经验来保障质量。

Problems tend to decrease with it, but we cannot depend on the experience of some to have quality in the developed systems.

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虽然消费者在卫生纸上的花费减少了，但从理论来看，他们至少对于纸的质量仍然很挑剔。

While consumers are spending less on toilet paper, they remain fussy in theory at least when it comes to paper quality.

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So, if you could make automobiles with a high magnesium content, you would reduce the mass, reduce the energy required, and thereby reduce the environmental impact.

所以，如果你能用含镁量,很高的材料来制造手机，你就能减轻手机的质量，减少制造所需能量，因此减轻了对环境的破坏。

麻省理工公开课 - 固态化学导论课程节选

He goes back and redoes the calculation, only in this case he says what I am going to do is I am going to redo the calculation for helium, but I am going to consider not just the mass of the electron but the reduced mass of the system.

他回去重新做了计算，仅在这种情况下他才会说说我将要,为氦重做计算，但我认为,不只是电子的质量,还有系统质量的减少量。

麻省理工公开课 - 固态化学导论课程节选