袋鼠的复数是kangaroos。kangaroos的例句：Kangaroos compete with sheep and cattle for sparse supplies of food and water（袋鼠与牛羊争夺稀少的食物和水）。

kangaroos的例句：We first spent some time with the kangaroos（最开始，我们和袋鼠们待了一会儿）；You can also see kangaroos in zoos in China（你也可以在中国的动物园里看到袋鼠）。