"松鼠" 的英文是 "sparrow"。这个词源自古英语 "spearwa"，意思是 "小麻雀"。它在英语中是一种常见的鸟类，通常在城市和乡村地区都能看到。
例句：
The sparrows were chirping loudly in the park. (麻雀在公园里唧唧叫。)
I saw a sparrow building a nest in the eaves of my house. (我看到一只麻雀在我家屋檐下建巢。)
The sparrow is a very common bird in urban areas. (麻雀是城市地区非常常见的鸟类。)