英和和英

open wide

to disclose

The curtain rises

The plays begins

The performance commences.

something to be opened

an opening ceremony

an inauguration

a natural opening in something

to open a gate

to start a ceremony

stomatal openings

open

open a package

split open

to hold a meeting

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

open formally

a hinged door

to extract the square root （of a number）

the Colonization Department

perspective

a lid retractor

open ranks

evolution and involution

The door is open.

open formation

open invitation

to open widely

open‐minded