她说，在人们找到对抗物质主义的方法之前，无法逆转道德沦丧的趋势。
Moral decline will not be reversed until people find ways to counter the materialism in society, she says.
精神对抗物质并不是选择。
科学家很久以前就知道，由于生存环境恶劣，青蛙的皮肤中含有大量能够对抗微生物的物质。
Scientists have long known that the skin of frogs contains plenty of powerful germ-fighting substances because of the hostileenvironments they exist in.
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