这真的是四年一次? 下次要到2010年?

所有跟帖： 

• 最著名的壮观红色sockeye回流此地四年一次 有图为证 (图) -hhhh- ♀ (148 bytes) () 10/21/2006 postreply 16:18:27

• There should be salmon runs every year but some years -wunderlust- ♀ (55 bytes) () 10/21/2006 postreply 23:29:12

• For Adams River Sockeye Run, yes, once every 4 years for the big -Lvtotravel- ♀ (556 bytes) () 10/22/2006 postreply 09:11:25