海狸在英语中被称为 "beaver". 它来自古英语 "beofor" 或 "befer"，源自古德语 "biber"。
例句：
"The beaver is known for building dams and lodges." (海狸以建造堤坝和小屋而著名。)
"The beaver is the largest rodent in North America." (海狸是北美最大的啮齿动物。)
"Beaver fur is used to make hats and coats." (海狸皮用于制作帽子和大衣。)