îI(y)WW(wng)Ӎ
иx~R俼һֱԁDZ^ܠhԒ}ЩJиx~R俼ҪӢZļˮƽЩ˄tJиx~ԽԽ@ɷNe`҂Ԕ˽иx~RЌI(y)~RĜʂϣ
иxҪ֪һcI(y)~R@^Ǻy܌~R
1.иx~RƫڌI(y)|ԭ@ӣиԇǞ˿ӢZˮƽܷCڴWWI(y)֪R˿ăƫ،WgķxҲĴWnĺ׃xȡڱ~ĕrڌWg~
2.иxČI(y)~Ryޡ@cҲǺȻиһTӢZˮƽԇֲnjI(y)ԇy^ČI(y)~Rxд_F(xin)ǿăݣ˼Ժز³eӣIt should be obvious that cetaceans--whales, porpoises, and dolphins--are mammals@OGx}еһԭ@Ԓеcetaceanһ^I(y)o豳Ć~ֻҪJRwhalesdolphinsmammals֪cetaceanˮ()@ஔ֪cetacean˼ˡҪӛmammalwhaledolphin@N^õČI(y)~Rcetacean@NƧͣѾڱ@NDĆ~Ǻֵܲõ
2.иxČI(y)~Ryޡ@cҲǺȻиһTӢZˮƽԇֲnjI(y)ԇy^ČI(y)~Rxд_F(xin)ǿăݣ˼Ժز³eӣIt should be obvious that cetaceans--whales, porpoises, and dolphins--are mammals@OGx}еһԭ@Ԓеcetaceanһ^I(y)o豳Ć~ֻҪJRwhalesdolphinsmammals֪cetaceanˮ()@ஔ֪cetacean˼ˡҪӛmammalwhaledolphin@N^õČI(y)~Rcetacean@NƧͣѾڱ@NDĆ~Ǻֵܲõ