@[sl159137](/user/1083423) $2^n=2\times2\times\dots\times2$，乘了 $n$ 个
by WydnksqhbD @ 2024-04-11 22:49:49
@[WydnksqhbD](/user/1139577) 谢谢解答！
by sl159137 @ 2024-04-11 22:52:16
@[sl159137](/user/1083423) 互关 ok？
by WydnksqhbD @ 2024-04-11 22:52:56
ke yi
by sl159137 @ 2024-04-11 22:55:44