英和和英

open wide

open the lock of

split open

open formation

a natural opening in something

opencast mining

opencast mining

to burst open

a lid retractor

open

not open

not open

open ranks

of a thing, to open to its full width

open ground

stomatal openings

slightly open

an open formation

be wide open

a 100 mesh screen

something to be opened

to extract the square root （of a number）

2240 foot-pounds

to open widely

an unsealed letter

a narrow opening

The curtain rises

The plays begins

The performance commences.

to take off the lid―raise the cover―uncover a box―open a box