这正是大自然为什么让一些雄鸟长着充满异国情调的羽毛或让麋鹿拥有大而笨重的鹿角(这也是一个生态系统健康的标志)的原因之一。
This is one of the reasons why some males birds have exotic plumes, why elk carry hefty antlers (a sign of a healthy immune system), and why male fiddler crabs have such large claws.
农业技术创新成功与否应以是否投入农业应用，产生经济效益或社会效益或生态效益或三者的综合效益为衡量标志。
Whether agrotechnique innovation is successful lies in whether it was applied into agriculture and producing economic benefit, social benefit, ecological benefit or integrate benefit.
农业技术创新成功与否应以是否投入农业应用，产生经济效益或社会效益或生态效益或三者的综合效益为衡量标志。
Whether agrotechnique innovation is successful lies in whether it was applied into agriculture and producing economic benefit, social benefit, ecological benefit or integrate benefit.
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