当代愚公!

来源: 2011-08-04 19:43:49 [旧帖] [给我悄悄话] 本文已被阅读:

$3,000,000 / $20 / 365 (day) / 40 (year) = 10.27 (times/day)

同学们那,这才是当代愚公啊!挖山不止,一日十次,四十年啊!