Monogamy

Polygamy

Binary system

to subdue the enemy and achieve victory

to bring the enemy under control

not worth going for (spoken)

worthwhile; a good deal

water restriction; water rationing

a strategic position from heights for military purposes

one of the kinds of decimal numeral system, base 10

judicial system

absolute monarchy

no way (spoken)

it's not worth going for

Apprenticeship

Age restrictions

Pro-Beijing Camp; Pan-establishment Camp; Establishmentarians (Hong Kong politics)

to enforce

adj; mandatory, compellent

compulsory; mandatory

a controller; a control device; a sequencing unit

a control tower

political system; political institutions

noun; educational system; educational scheme

the education system

Science and Technology System

Preprogrammed automatic control

agree; to give approval

pedal

limitation