n.

activities associated with sexual intercourse

"they had sex in the back seat"

同義詞：sexual activitysexual practicesex activity

either of the two categories (male or female) into which most organisms are divided

"the war between the sexes"

all of the feelings resulting from the urge to gratify sexual impulses

"he wanted a better sex life"; "the film contained no sex or violence"

同義詞：sexual urge

the properties that distinguish organisms on the basis of their reproductive roles

"she didn't want to know the sex of the foetus"

同義詞：gendersexuality

The two sexes: Growing up apart, coming together
The two sexes: Growing up apart, coming together.
The Two Sexes: Growing Up Apart, Coming Together.(Review)
Red Deer: Behaviour and Ecology of Two Sexes
Antagonistic coevolution between the sexes in a group of insects.
Alternative reproductive strategies and tactics: diversity within sexes.
Major molecular differences between mammalian sexes are involved in drug metabolism and renal function.
Sexual Conflict and Arms Races between the Sexes: A Morphological Adaptation for Control of Mating in a Female Insect
Differential premises arising from differential socialization of the sexes: some conjectures.
Why are there so many tiny sperm? Sperm competition and the maintenance of two sexes.