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1·Organic food is unadulterated food produced without artificial chemicals or pesticides.

有机食品是纯粹的不含人工化学制剂或杀虫剂的食物。《柯林斯英汉双解大词典》

2·It was pure, unadulterated hell.

那是纯粹的，十足的地狱。《柯林斯英汉双解大词典》

3·For me, the holiday was sheer unadulterated pleasure.

对我来说，这个假期是百分之百的赏心乐事。《牛津词典》