极光是一种什么现象?

来源:学生作业帮助网 编辑:作业帮 时间:2024/07/14 05:44:39
xYisɑ+cn5!i=3 ۿCc$݈ xM@'}wUu_B71R*+˗o'Bb3*5J9n'uqoV~'̼?bg߯|xAoo-Ua_fiQJE"'9]f7཈wWW]KK~An _F*I=< ,Ee)aN`yx*W}ah@TFmԧR3?q{XP$B^ -޺):6z*F`9%N-,| =sBާC~Pyx1fၨ7y.k$6uYm4e~(9Qhw,{7:@T* v..9MQoԍ86ޭ:>C}/j`gggEnYx"<^|@j[ ȫQv?۾sYս+Y:v!Ŷ;:VWudKm7p>@hyղNV%*W0'=2 oVnU vۉyE;'& )uDg䎃ި(d1,dAuDK$1`Q $G8Qn; J.wPN/e/0oħSh[')}m(g9@}w#jb7=\7Q{${F[]T{6.Bn#J9D6e.E6a|QI _Ȗh6֋ԽWFXM(uQK,ilҡHgJ=n N-8{u !2ЍO" G-JA|Sz4^Zf`RBEL1$h$kȇRqz P{AYØX%2a,M,ËyYz%g <؂Npj@[j Ebxq@ !֦/Cҩ{Q-P9o .۾t#$X*/Y1{{:lAX)Qbe`1cڝWb7p%46cްyoPORdG$$Ku;B!hNZӲE.`@sWH(ڀȦ4E]QKX&\`b#d-W;LS4(cw *Zg뻏 #p"Us{Ŗ*fM $-pg9$| Y^YS}~8hTewgߎ98s4EX)#l+B)iIZ~`[y*ؤ ųBgAt"'&%4n{3inD<8hɄx[ D'F$n!ȋ/g={67?+aո`-~"F(칗/QiKy{1zB̢knV^̚6[":;'E{]j CSsz]uс9bKuI،ZGr ?YzSH=VZO%{uQ;Eڜ1$v^{0΋cS*Egg%yPk5~`;*Pǝ{bu88||SCO{ jReGblǞ{: )RMKef6 ȣW*ID dDIcq|9Hqp0UX|ߍDU6D䀆41Yys`JX{Wfk Ag9sH'UbTZRiqoCb;Dפשm}L)ACA`vȶܴXHw NE.L傷FUM%BX,Q)ցB u66r@edЛhjf)`Cn8la8`̆9ݔubtRL)MN/B|bm0kZfX=PalzMUe>DM#aNoz#Sgkx1-!`w^W6\܉jB=IK{ApPO"Vz)lF>Nç&ď!P8yā(NJSɘ_Y=Ý3D0` 5RZnVD}hҞOShDCD,swĐ42`{4.$CMnWՃ';s1? GXNSfC@5#0U4@EP7[F!m@ *_:SŬItv=]|[bI7"$(hs0$ZQሡ\?~qd6"[sؚXDD|Ls AaZz."#4vP3/aK7m* Fːti3y O}YB?SgIDZ@pB4>(w+#@}C1Q=[D`Ճ6>c&{fmMJ DغhN~ȕK4GE"=˨sd:C NNqM T#*[j*w$1ojH3I4Rkec6xoDHZ\(hZӋJ @jgͨIjF2T3oMr  Ǐlɣ4;w BvӖ6I]{tXOYy8V' VäoAC|TGT1cO4xBw΂l+] 4,XƖ:URO7U#Ӈҧd%Kxð;H2=j6r&[Y,!Pt!o+2@ `ljn4xC0;(W34Z%>%Ⰵ хb'SK_A-brS Lwt1n^/jڦ:U