P(gun)иԇx߷ּ֮x~R
иxҪ֪һc(din)(zhun)I(y)~R@^Ǻy܌(zhun)~R

1.иx~Rƫڌ(zhun)I(y)|(zh)ԭ@ӣԇǞ˿ӢZ(y)ˮƽܷCڴW(xu)W(xu)(x)(zhun)I(y)֪R(sh)˿ă(ni)ƫ،W(xu)g(sh)ķģxҲĴW(xu)nĺ(jin)׃(ni)xȡڱ~.r(sh)?q)ڌW(xu)g(sh)~Roһ̶ȵҕǺġ
2.иxČ(zhun)I(y)~Ry@c(din)ҲǺȻģ?yn)иһT(mn)ӢZ(y)ˮƽԇֲnj(zhun)I(y)ԇy^Č(zhun)I(y)~Rxд_(sh)(hu)F(xin)ǿă(ni)ݣ˼Ժز³(li)e(g)ӣIt should be obvious that cetaceans--whales, porpoises, and dolphins--are mammals@OGx}еһ(g)ԭ䡣@Ԓеcetaceanһ(g)^(gu)(zhun)I(y)o(w)豳Ć~ֻҪJ(rn)R(sh)whalesdolphinsmammals֪cetaceanˮ()(dng)Dz(dng)@ஔ(dng)֪cetacean˼ˡҪӛmammalwhaledolphin@N^õČ(zhun)I(y)~Rcetacean@NƧ(li)Ѿڱ@NDĆ~Ǻֵܲõ
P(gun)иԇx߷ּ֮x~RP(gun)£
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