
挪nuó威wēi科kē技jì大dà學(xué)xué的de科kē學(xué)xué家jiā經(jīng)jīnɡ過ɡuò研yán究jiū發(fā)fā現(xiàn)xiàn,與yǔ生shēnɡ活huó在zài溫wēn暖nuǎn環(huán)huán境jìnɡ中zhōnɡ的de海hǎi豹bào相xiānɡ比bǐ,北běi極jí海hǎi豹bào為wèi了le適shì應(yīng)yìnɡ嚴(yán)yán寒hán且qiě干ɡān燥zào的de氣qì候hòu,進(jìn)jìn化huà出chū了le一yí個(gè)ɡè更ɡènɡ加jiā復(fù)fù雜zá的de鼻bí腔qiānɡ通tōnɡ道dào,用yònɡ來lái鎖suǒ住zhù水shuǐ分fèn和hé熱rè量liànɡ。