[自然題]在銀河系中,大約有多少顆星星
3 J( W ]3 V; y, ?) [tvb now,tvbnow,bttvb
/ R8 t* F" X* T+ K; I+ g9 C5.39.217.76
6 P' S. c* M% h, N% Y# N' h( N; A5.39.217.76# K/ o' y/ n- w! x
tvb now,tvbnow,bttvb. d( d( e! h3 w5 N* Q% U9 x
按Ctrl + A 看答案...公仔箱論壇* G; k0 v& ] Z# U4 g
[答案]約一千億顆 |