英和和英

open ground

open wide

split open

reeve an opening

to burst open

open formation

open involuntarily

to clear a warehouse―make room in a warehouse

to clear （out） the godown―make room in the godown

open ranks

the opening salvo

to force something open

open a package

open waters

being widely open

The curtain rises

The plays begins

The performance commences.

to open the trenches

a lid retractor

open weave

Robin Hood

a splayed opening

a floppy disk

open

to make canal through―canalize―a country

evolution and involution

open violently

poached apricots

to extract the square root （of a number）