小口罩等于大口罩的一半还是四分之一,小哑铃大约是大哑铃的三分之一。。。。
所有跟帖:
• 戴口罩算程算减,,, -久经沙场的枪- ♂ (0 bytes) () 05/05/2022 postreply 08:45:03
• 拿在手里算加,戴在脸上算乘,,,顶在头上算幂,踩在脚下算对数 -500miles- ♂ (0 bytes) () 05/05/2022 postreply 09:25:54
• 戴口罩算程算减,,, -久经沙场的枪- ♂ (0 bytes) () 05/05/2022 postreply 08:45:03
• 拿在手里算加,戴在脸上算乘,,,顶在头上算幂,踩在脚下算对数 -500miles- ♂ (0 bytes) () 05/05/2022 postreply 09:25:54
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