balance e of nature生态平衡;自然界生态平衡;自然平衡
the balance of nature生态平衡;自然平衡;保持生态平衡;自然界的平衡
keep balance of nature保持生态平衡
a balance of nature生态平衡
balance of nature detail自然界平衡
keep the balance of nature保持生态平衡;保持自然平衡;保持自然界的平衡;维持生态平衡
keep a balance of nature生态平衡
upset the balance of nature打破生态平衡
damage the balance of nature破坏生态平衡
N(名词) the stable state in which natural communities of animals and plants exist, maintained by adaptation, competition, and other interactions between members of the communit ies and their nonliving environment 自然平衡