英和和英

empty

empty completely

empty completely

get empty

go blank

empty‐headed

one's empty boasts

to fill a blank

an empty can

a blank file

Under the sky

a blank

an empty space on a page

a lowering sky

an empty space

vanish [disappear] into thin air [the air].

vide infra

vide infra

the upper reaches of the sky

the sky clouded over

It dissolved into the air―melted into the air.

a gloomy sky

the pellucid sky―the limpid air

a liquid sky

the stratosphere

a cloudy sky

an overcast sky

false hopes

vain hope

a set that is empty