In fact,no human activity more puzzlingly crosses the divide between nature and culture than the selection of food. it is part of the nurture of the body,but it is also very much a social matter.

• 其实，在人类的行为中对食物的选择最令人费解地横跨自然与文化的界线，它既是人体自然天性的一部分，在很大程度上也是社会问题。