Biological way生物方法biologicaladj.生物的；生物学的biological security level生态安全水平biological species safety生物物种安全biological specialization生理专化现象biological iron-removal生物除铁Biological exposure limit生物接触限值biological polysaccharide生物多糖biological overharvesting生物学超捕biological assay bioassay生物测定, 生物学鉴定(法)biological screening test生物筛选试验biological neural network生物神经网络

1. Man is in the highest link of the biological chain.
   人类处于生物链中的最高一层。