纳西人不想打破自然界的平衡，这种观念使丽江成为中国古城镇规划中的一个不同寻常的例子。它没有人为安排的秩序，而是依自然环境的轮廓顺势塑形。
The Naxi's desire not to upset the balance of nature has made Lijiang an unusual example of ancient Chinese town planning, one not governed by man-made order, but by the 10 contours of nature.
而增加对害虫天敌的种类或数量，来打破自然界的相对平衡，使之不利于害虫种群的增长，从而减少和防止它们的为害。
We can break the balance of nature by increasing the category and quantity of pests' natural enemy so as to limit their growth and thus prevent the harm.
保护生态系统，保护物种将有助于维持自然界的平衡，而这样的平衡已经被近年来的人类活动打破。
Conservation of ecosystems and the species within them could help to maintain the natural balances disrupted by recent human activity.
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