Tourists often disturb the delicate balance of nature on the island.游客常常打乱岛上微妙的生态平衡。Man may destroy the balance of nature, but, from time to time, nature takes a terrible revenge.人类可以破坏自然的平衡，但自然会不时痛加报复。Man has managed to wreak havoc on the delicate balance of nature.人类竟然将自然界的微妙平衡摧毁了。