Meanings

constraint

living room and bedroom

to combine with

carrying on a second line of work

working twice as hard

subject for a poem (announced prior to a meeting of poets)

serving concurrently as

equilibrium

holding of concurrent (official) posts

holding another position

being proficient in both

to serve at the same time

part-time farmer

serving concurrently as

uniting

and (concurrently; e.g. chauffeur and secretary)

to have both

additional post

combined use

to be unable to endure