Eugenics has a biological significance.是什么意思？

Eugenics has a biological significance.

优生学具有生物学上的意义.

eugenics

n. 优生学；

例句
An example of negative eugenics would be the attempt to eradicate a harmful recessive gene.
消极优生学的范例是试图破坏一种对人体有害的隐性基因.

has

v. 有( have的第三人称单数 )，（亲属关系中）接受，拿，买到；

例句
...the operation a patient has had.
病人做过的手术

biological

adj. 生物学的，生物的，与生物学相关的，有血亲关系的；n. [药]生物制品，生物制剂；

例句
The living organisms somehow concentrated the minerals by biological processes...
生命体通过某种生物过程聚集矿物质。

significance

n. 意义，意思，重要性；

例句
The authorities attached much significance to his visit.
当局非常重视他的访问。