4周搞定2000+托福核心词
emigrate = e(出去) + migr(迁移) + ate(表动词) = 向外迁移→移居国外
emigration = e(出去) + migr(迁移) + ation(表名词) = 移出→移民
lavatory = lav(洗) + atory(表性质) = 冲洗的地方→洗手间
preparatory = pre(预先) + par(出现) + atory(表性质) = 预备的
移居的；移栖的
migratory
常考释义
Early in his research, Kramer found that caged migratory birds became very restless at about the time they would normally have begun migration in the wild.
在研究早期，Kramer发现被关在笼子里的侯鸟同往常去野外开始迁徙的时候变得焦躁不安。
来源于：阅读OFFICIAL11 P2adj. 移居的；移栖的；迁移的
Many migratory birds visit this lake annually.
许多候鸟每年到这个湖上作短期逗留。
Early in his research, Kramer found that caged migratory birds became very restless at about the time they would normally have begun migration in the wild.
在研究早期，Kramer发现被关在笼子里的侯鸟同往常去野外开始迁徙的时候变得焦躁不安。
来源于：阅读OFFICIAL11 P2Furthermore, he noticed that as they fluttered around in the cage, they often launched themselves in the direction of their normal migratory route.
而且，他注意到，当这些鸟在笼子里躁动不安时，它们通常会飞向迁徙路径的方向。
来源于：阅读OFFICIAL11 P2He then set up experiments with caged starlings and found that their orientation was, in fact, in the proper migratory direction except when the sky was overcast, at which times there was no clear direction to their restless movements.
于是，Kramer用星椋鸟做实验，将它们关在笼子里，总结出了它们的迁徙方向，事实上，它们基本都能朝向正确的迁徙方向，阴天除外，因为阴天的时候它们的骚动不安使得它们难以清楚分辨方向。
来源于：阅读OFFICIAL11 P2To test the idea, caged night-migrating birds were placed on the floor of a planetarium during their migratory period.
为了证实这一推测，把在夜间迁徙的侯鸟关进笼子里，并在它们的迁徙的时间段，将笼子置于一个天文馆的地板上。
来源于：阅读OFFICIAL11 P2adj. 流浪的；游牧的；流动的；漂泊的；活动性的
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