送交者: JFF 于 2011-03-05, 10:45:14:

回答: a vacuum forms as soon as an infinity shows up its lovely head 由 suprathinker 于 2011-03-05, 03:57:11:

• 他在玩数学基础问题，但又没拿出任何干货 (无内容) - gyro (0 bytes) 2011-03-05, 11:19:47 (556082)

加跟贴