yì jiǎo jīng / shēng huó / zài / běi jí / hǎi yù / yǐ qí / cháng cháng / de / jiǎo / ér / wén míng一角鲸生活在北极海域,以其长长的角而闻名。Narwhals live in Arctic waters and are famous for their long tusks.