But that is not my question: I have no problem with

But that is not my question: I have no problem with

所有跟贴·加跟贴·新语丝读书论坛

送交者: chouqilozi 于 2007-05-21, 14:09:20:

回答: Stephen Jay Gould的Ever since Darwin: Reflections on Natural History讲过由自如于 2007-05-21, 12:25:35:

them being 17-year cicadas, but what is preventing them from emerging EVERY YEAR?

如果每年都出来，那么它的天敌在那个时候等着大嚼就是了 - 自如 (22 bytes) 2007-05-21, 19:53:32 (141336)
- 这么说吧:只考虑这种十七年蝉,最初时刻应该是每年都有十七 - chouqilozi (295 bytes) 2007-05-21, 20:48:18 (141345)