We should treat it carefully and with respect, and we do not want to mess with it, say by C-sections or by antibiotics or excessive cleanliness, without some real good justification.
我们应该认真对待它，尊重它 我们不应该在不必要的情况下破坏它的平衡 比如采用剖腹产，使用抗生素 或过度清洁