See, kangaroo rats make lots of burrows, and bury seeds to eat later.

看，袋鼠鼠会挖很多洞， 然后埋下种子以供日后食用。

In the late 1900s, researchers even ran an experiment where they excluded three species of kangaroo rats from small areas of desert shrubland over ten years.

在 1900 年代后期，研究人员甚至进行了一项实验，他们在十年内从沙漠灌木丛的小区域中排除了三种袋鼠。