to transfer / to move (troops or cadres) / to investigate / to enquire into / accent / view / argument / key (in music) / mode (music) / tune / tone / melody
to be born with a weak constitution and suffer from ill health during one's life / (fig.) to be problematic from the start, and get even worse over time
central air conditioning / (fig.) (neologism) ladies' man (contrasted with 暖男[nuan3 nan2], a guy who is attentive to his partner rather than to all and sundry)