The buck-toothed creatures helped extinguish nearly one-eighth of Australia’s native mammal species and led to the extinction of countless numbers of plants, leading to widespread soil erosion.
这些长着小龅牙的生物“帮助”澳大利亚八分之一的土著哺乳动物走向灭绝，顺道再让不计其数的植物从此消逝，最后的结果便是，澳大利亚严重的大面积水土流失。
About 20 species: widespread in the temperate zones of both hemispheres; one species in China.
大约20种：在两半球的温带的区域的广布的；在中国的一种。
The water hyacinth damage is belonged to one example introducing outside species damage , this plant is already widespread and uncurbed , "green is called contaminating a crime culprit ".
水葫芦的危害属于引进外来物种危害的一例，这种植物已经泛滥成灾，被称为“绿色污染元凶”。
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