雅思的一道阅读题.

来源:百度知道 编辑:互助问答吧 时间:2022/05/26 11:56:44
of the 26 species that are known to have become successfully integrated into the local enviroment, only one, an african species released in northern australia, has reached its natural boundary.
has reached its natural boundary.有什么意思吗? 和integrated 不是一样的的?

has reached its natural boundary 其实就是说已经到了忍耐的极限了。不能够在当地生存下去了。
integrated是指融入了当地环境