Meanings

carrying on a second line of work

to be unable to

operating or carrying on simultaneously

studying two subjects together (e.g. as a major and a minor)

serving concurrently as

multi-use

(a woman) being gifted with both intelligence and beauty

likely to do

to be reluctant to do

prime minister also serving as foreign minister

around-the-clock

pursuing as a side business

since long ago

having both (at the same time)

living room-cum-dining room

quite capable of ...

to be unable to bear (something) any longer

having both wisdom and courage

having both (wide) knowledge and (high) virtue

well up in both literary and military (martial) arts