损害: harm, to damage, to impair...
认可: to approve, approval, acknowledgment, OK...
亮相: to strike a pose (Chinese opera), to make a public appearance, to come out in public (revealing one's true personality, opinions etc), (of a product) to appear on the market or at a trade show etc...
普通: common, ordinary, general, average...
雇主: employer...
应用: to put to use, to apply, practical, applied (science, linguistics etc), application, practical use, (computing) app...
协议: agreement, pact, protocol...
创始人: creator, founder, initiator...
大妈: father's elder brother's wife, aunt (affectionate term for an elderly woman)...
好歹: good and bad, most unfortunate occurrence, in any case, whatever...