英和和英

an increase of 20 percent

divide by two

increase twofold

increase twofold

pay double

double pay

divisible by two

to double the number

twofold

three times and more―three times and over

to double the complement

as twice as

extra fine

to double

double ale

twice as much

double width

to double oneself

moreover

twice―double

double again

to divide anything into three parts―trisect anything

twice as many

double one's wager

additionally

to double the degree

double the file

a half―one-half（1/2）

one half

10 percent discount―10 percent reduction