Protect wild animals and protect ecological balance.
保护鸟类保护野生动物维护生态平衡。
Protect animals and maintain ecological balance.
保护动物，维持生态平衡。
Maintain ecological balance and protect animals.
维护生态平衡，保护动物。
Protect birds, protect wild animals, maintain ecological balance.
保护鸟类，保护野生动物，维护生态平衡。
In order to keep the ecological balance, people should protect animals.
为了保持生态平衡，人们应该保护动物。
In order to keep the ecological balance, people should protect animals.
为了保持生态平衡，人们应该保护动物。
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