like humans, killer whales have colonized a range of different habitats across the globe, occupying every ocean basin on the planet, with an empire that extend from pole to pole.
2019年6月四级真题（第二套）阅读 Section A
柯林斯高阶英汉双解学习词典释义
VERB
在…开拓殖民地;将…建成殖民地
If people colonize a foreign country, they go to live there and take control of it.