naturism
noun /ˈneɪtʃərɪzəm/
/ˈneɪtʃərɪzəm/
(especially British English) (also nudism British and North American English)
[uncountable]- the practice of not wearing any clothes because you believe this is more natural and healthy
裸体主义(认为裸体更自然更有益健康)