英和和英

destination unknown

a constantly changing address

an unidentified species

an unprintable epithet

of undetermined species

an unknown source

not addressed

not chartered

an undefined term

an unlisted telephone number

an unknown quantity

an unknown quantity

Won't record it

an uncountable noun

an uncountable noun

They are for an unknown destination.

unknown problem

an unembellished figure

unlisted stocks

an unidentified ship

no settings

not open to the public

an unknown island

an uncompleted line

not registered

Hasn't been set

have not been set；has not been set

not recorded

not clearly defined

an uncompleted pass