

ビーバーは木をかじってダムを作ります。
この川にはビーバーが住んでいるそうです。
動物園でビーバーを見たことがありますか。
"ビーバー" is in the lesson "Wild animals" (Level 11), along with 13 other useful words. LinDuo has 180 topic lessons like this one, 2,379 words in total. Every word has an illustration, a transcription and pronunciation in a female and a male voice. Just 10–15 minutes a day is enough to learn them all. Free, and works offline.