accidental species

基本解释

Introductions of new species, both accidental and deliberate, over the past few centuries show the problem.
在过去的几百年里，不管是有意地还是无意地引进新物种，都暴露出一些问题。
Lewison said that long-lived species are particularly affected by accidental entanglement in fishing lines, because these species take so long to reproduce.
刘易森称，长命物种很容易被钓丝意外缠住，因为这些生物需要很长时间才能繁殖。
Noting the decline in hunts of whales and other sea mammals over the last few decades, the IUCN said accidental killing in fishing gear was now the "main threat" to these species.
注意到在过去几十年间捕杀鲸鱼和其他海洋哺乳类动物的下降，IUCN 说，在渔具中的意外死亡现在是这些物种的“主要威胁”。
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In summary, Dr Saetre and his colleagues have vindicated Dobzhansky and thus confirmed a mechanism for the origin of species that is directly caused by natural selection, rather than being an accidental by-product of it.
ECONOMIST: Evolution