On my right, you can see one of the biggest types: the red kangaroo.

在我的右边，您可以看到最大的动物之一：红袋鼠。

In all, he tested three different species: Kangaroo Island kangaroos, eastern grey kangaroos and red kangaroos.

他总共测试了三个不同的物种：袋鼠岛袋鼠、东部灰袋鼠和红袋鼠。