a threesome with one man and two woman [written and colloquial]

literally: killing two birds with one stone; a threesome with one man and two woman [written and colloquial]

kill two birds with one stone; achieve two things at one stroke; serve double purpose (idiom)

A pair

a pair of shoes

two person always seen together in public

to intervene [colloquial]

only one in the world

just wait and see; watch out

talented in both civil and military affairs

peerless

to be very ruthless / ferocious [colloquial]

mens doubles (in sports)

describes a woman who have lost her virginity to someone [colloquial]

good fortune and longevity

unrivalled

only one; unrivalled

a threesome with one man and two woman [written and colloquial]

double

the Chinese radical of "彳"

double

diphthong

to possess both

two-way

A Tale of Two Cities

double loop

Two Girls, the first cosmetics brand in Hong Kong

Chinese compound surname; double-barrelled name

Gemini

Gemini star sign