货币: currency, monetary, money...
零食: between-meal nibbles, snacks...
介入: to intervene, to get involved...
确立: to establish, to institute...
礼节: etiquette...
多种: many kinds of, multiple, diverse, multi-...
表现: to show, to show off, to display, to manifest, expression, manifestation, show, display, performance (at work etc), behavior...
高手: expert, past master, dab hand...
抹: to smear, to wipe, to erase, classifier for wisps of cloud, light-beams etc...
家属: family member, (family) dependent...