周期/族
ⅠA
ⅡA
ⅢA
ⅣA
ⅤA
ⅥA
ⅦA
○
2
①
②
③
④
3
⑤
⑥
⑦
⑧
⑨
⑩
⑪
⑫
数字的个数是无限的.
—_______She is willing to play against any tough players.