你好，海狸先生！(Hello Mr. Beaver!)

今天，我们庆祝国际海狸日！海狸湿地与野生动物组织于2009年设立了这一天，强调了海狸在我们的生态系统中发挥的重要作用。海狸是一种非凡的生物，以其筑坝技能而闻名，这些技能创造了湿地，使众多物种受益。作为北美最大的啮齿动物，它们可以长到一米长，不包括它们独特的扁平尾巴。它们不断生长的牙齿，厚厚的牙釉质使它们呈现出橙色，是啃树的重要工具——这种行为既能保持牙齿健康，也能保护环境。难怪他们强壮的砍刀使他们成为自然界最好的工程师之一。
原文：
Today, we celebrate International Beaver Day! Established in 2009 by Beavers Wetlands & Wildlife, this day highlights the vital role beavers play in our ecosystems. Beavers are remarkable creatures known for their dam-building skills, which create wetlands, benefiting numerous species. As North America's largest rodents, they can grow up to a metre long, not including their distinctive flat tails. Their continuously growing teeth, with thick enamel giving them an orange hue, are essential tools for gnawing on trees—a behaviour that maintains both their dental health and their environment. No wonder their strong choppers make them one of nature's best engineers.
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