儒艮
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哺(bǔ )乳(rǔ )动(dòng )物(wù )。体(tǐ )色(sè )灰(huī )褐(hè ),体(tǐ )长(zhǎng )1.5至(zhì )2.7米(mǐ ),栖(qī )于(yú )热(rè )带(dài )海(hǎi )中(zhōng )。无(wú )毛(máo ),圆(yuán )头(tóu )小(xiǎo )眼(yǎn )。前(qián )肢(zhī )作(zuò )鳍(qí )形(xíng ),后(hòu )肢(zhī )退(tuì )化(huà )。牝(pìn )者(zhě )哺(bǔ )乳(rǔ )时(shí ),常(cháng )以(yǐ )前(qián )肢(zhī )拥(yōng )幼(yòu )仔(zǎi ),头(tóu )、胸(xiōng )露(lù )出(chū )水(shuǐ )面(miàn ),远(yuǎn )望(wàng )如(rú )抱(bào )儿(ér )之(zhī )妇(fù ),故(gù )俗(sú )称(chēng )人(rén )鱼(yú )。
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