The original white lead pigments have oxidized and turned black.
原来白色的铅颜料已经氧化发黑了。
《柯林斯英汉双解大词典》
2
Cooking when the original plus a spoonful of salt, changed to 0.8 key, not only can lead to the greatest degree of flavor and fresh food, the kidneys would not have formed too great a burden.
烹饪时原本加一匙盐，改为0。8匙，不仅能够最大程度引出生鲜食物的原味，对肾脏也不会形成太大的负担。
3
Well, first of all, I should note that the lead author from the original study does not necessarily agree with the findings of this meta-analysis. From the NYTimes coverage