通約: (mathematics) to reduce a fraction to its lowest denominator / 通訳: to interpret (the spoken word)

通約: (mathematics) fractional reduction, reduction of a fraction to its lowest denominator / 通訳: interpreting, interpretation (of the spoken word); an interpreter

difficult / hard, probably impossible

untie; unravel; undo (a fastening); unwrap / dispel (doubts); clear up (a matter)

solve (a problem); answer (a question); unravel (a riddle) / comb; untangle (hair)

to interpret: to listen to speech in one language and then convey the meaning of that speech in the language of the listener

to interpret: to listen to speech in one language and then convey the meaning of that speech in the language of the listener

interpreting, interpretation: the facilitation of spoken conversation between two or more parties that do not all speak a common language

teach; to instruct; give a lesson

instruction; teaching; school; lesson, class