送交者: steven 于 2005-7-06, 22:34:28:

回答: what the big deal about the Deep Impact? 由 skipper3 于 2005-7-06, 19:15:56:

you have no idea how difficult it is.

• That's right. I don't! But I didn't say it's easy. - skipper3 (244 bytes) 2005-7-06, 23:36:09
  • all space missions are difficult, since there are too many factors - steven (1602 bytes) 2005-7-07, 01:27:04
• To a monkey, getting to the moon seems easy for its only 10 ft away in the pond - PhonyDoctorPhD (0 bytes) 2005-7-06, 22:38:46

加跟贴