Uehling wanted to know how many nonnative parrots were living in the U.S.

尤林想知道有多少种非本地鹦鹉生活在美国。

Most of these nonnative parrots were either released by owners or escaped from captivity.

大多数这些非本土鹦鹉要么被饲养者放出来，要么从笼中逃脱。

Problem is when humans go somewhere, hitchhikers come with—like a nonnative flightless midge, an insect that has already taken up residence in the peninsular region.

问题是， 当人类去某个地方时，搭便车的人会像非本地的不会飞的蠓，一种已经在半岛地区定居的昆虫。