英和和英

unable to open file

open

overwrite that file

split open

open a package

open invitation

a document holder called file

reeve an opening

to disclose

open formally

to open a book

something to be opened

an act of opening a book

open wide

open the map

The curtain rises

The plays begins

The performance commences.

by open declaration

cut open

to extract the square root （of a number）

to start a ceremony

to open a book

to hold a meeting

visible files

a natural opening in something

to make a thing open

to open a package

fill up a document

open ground