黑巧克力也许没有你想的那么健康。美国的一项新研究发现,受土壤污染的影响,许多黑巧克力产品中的铅和镉等重金属含量都超标。 Photo/Pexels Dark chocolate and similar cocoa products are contaminated with lead and cadmium, two neurotoxic metals that are linked to...