A part surface can be infiltrated with a low melting point metal to increase density, strength, hardness, ductility and impact resistance.

零件表面能被低熔点金属渗透以增大密度、强度、硬度、延展性和抗冲击能力。

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Diet, as we said before, is having a big impact, so estimates are that you can attribute two point six million deaths per year globally to low intake of fruits and vegetables.

如我们之前所说,饮食对健康至关重要,所以大致估计每年全球,有260万人的死亡可归结于,水果与蔬菜的摄入过少

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选