Eugenics has a biological significance.优生学具有生物学上的意义.A distinction is often made between " positive " and " negative " eugenics.对 “ 积极 ” 优生学和 “ 消极 ” 优生学往往加以区分.An example of negative eugenics would be the attempt to eradic...

n.优生学...

eugenics的音标：eugenics的英式发音音标为：[ju:'dʒenɪks]eugenics的美式发音音标为：[ju'dʒɛnɪks]...