英和和英

cut open

to open up

to burst open

reeve an opening

to push open

to open the curtain―raise the curtain―draw （back） the curtain

stomatal openings

become open

the opening act

to open (something) completely

split open

to open widely

to open something up

open wide

open formally

to open completely

open

the opening quotation

to make a thing open

open violently

slide a drawer out

to make a beginning―pave the way for something

to pave the way for something

the Colonization Department

The curtain rises

The performance commences.

The plays begins

to extract the square root （of a number）

a natural opening in something

to go from one tack to the other