实用例句
- 属一群拥有共同祖先和明显特征的有机体，尤指属于同一物种的一群，通过人工选择来发展，通过有控制的繁殖来维持
A group of organisms having common ancestors and certain distinguishable characteristics, especially a group within a species developed by artificial selection and maintained by controlled propagation. - 先驱生物能在不毛之地生存的某种动物或植物种类
An animal or plant species that establishes itself in a previously barren environment. - 污染对这一物种的继续生存造成了威胁。
Pollution poses a threat to the continued existence of this species.
