養精蓄銳

to preserve and nurture one's spirit (idiom); honing one's strength for the big push

to raise (animals) / to bring up (children) / to keep (pets) / to support / to give birth

essence / extract / vitality / energy / semen / sperm / mythical goblin spirit / highly perfected / elite / the pick of sth / proficient (refined ability) / extremely (fine) / selected rice (archaic)

to store up / to grow (e.g. a beard) / to entertain (ideas)

acute