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Essential oils may be natural, but that doesn't mean they're always healthy or good for you. They're extremely concentrated versions of chemicals that plants make for various reasons: some to attract pollinators, some to repel or harm their natural enemies. 精油可能是天然产品，但这并不意味着精油一定是健康的、有益的。植物因各种原因（吸引传粉昆虫、击败或伤害它们的天敌）产生化学物，而精油就是这些化学物的浓缩产物。 These oils' utility to humans is mainly that they smell good, which you've probably already figured out: essential oils don't cure cancer and there's no solid evidence they do much of anything else for health. 人们使用精油主要是因为味道好闻，我猜你可能已经想到了：精油不能治愈癌症，而且尚未有证据明确表明它对健康有益。 | 
