多谢各位。wiki说用法因地而异。

送交者: 短江学者于 2009-04-22, 12:05:43:

回答: dictionary has it: (#4) 由 meiyou 于 2009-04-22, 12:02:04:

Watershed, drainage divide (non-American usage)
Watershed, drainage basin (North American usage)

google has 9000+ entries for '分水岭 + watershed' - meiyou (43 bytes) 2009-04-22, 12:13:14 (318330)