袋鼠的食物在英语中通常被称为"kangaroo diet"或"kangaroo food"。袋鼠主要以草食为主，它们的食物来源主要是干草、叶子、花朵和少量的水果。

下面是一些关于袋鼠食物的英文例句：

The kangaroo diet consists mainly of grass, leaves, flowers, and a small amount of fruit.
Kangaroos are herbivores and their food consists mostly of grass and other plants.
The kangaroo's diet is rich in fiber and low in fat, making it a healthy choice for herbivores.

下面是这些英文例句的中文翻译：

袋鼠的食物主要由草、叶子、花朵和少量的水果组成。
袋鼠是草食动物，它们的食物主要由草和其他植物组成。
袋鼠的食物富含纤维，脂肪含量低，是草食动物健康的选择。