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《The Descent of Man, and Selection in Relation to Sex》Chapter XVIII Secondary Sexual Characters of Mammals, continued
The Descent of Man, and Selection in Relation to Sex 人类由来与性选择 查尔斯·达尔文 Charles Darwin
2008/12/22
QUADRUPEDS use their voices for various purposes, as a signal of
danger, as a call from one member of a troop to another, or from the
mother to her lost offspring, or from the latter for protectio...
《The Descent of Man, and Selection in Relation to Sex》Chapter XVII Secondary Sexual Characters of Mammals
The Descent of Man, and Selection in Relation to Sex 人类由来与性选择 查尔斯·达尔文 Charles Darwin
2008/12/22
WITH mammals the male appears to win the female much more through
the law of battle than through the display of his charms. The most
timid animals, not provided with any special weapons for fighti...