水牛在英语中通常被称为"buffalo"。来源方面，buffalo这个词来自西班牙语，其中的"búfalo"一词本身源自拉丁语"bufalus"，意思是"牛"。

一些英文例句和中文翻译如下：

The buffalo is a large, shaggy-haired animal that is often found in North America.

水牛是一种体型庞大、毛发蓬松的动物，通常可以在北美找到。

The buffalo is an important animal for many Native American tribes.

水牛对于许多美洲原住民部落来说都是一种重要的动物。

The buffalo was once nearly extinct, but conservation efforts have helped its population to recover.

水牛曾经濒临灭维，但是保护努力帮助它的数量有了恢复。