微不足道: not worth mentioning; beneath discussion [mention]; be not worthy of mention; cut no figure; have little influence on ...; inconsiderable; insignificant; knee-high to a mosquito; negligibl
零碎: 1.(琐碎) scrappy; fragmentary; piecemeal 短语和例子零碎活儿 odd jobs; 充分利用零碎的材料 make full use of fragmentary material2.(零碎的事物) odds and ends; oddments; bits and pieces 短语和例子零碎物 flotsam and jetsam; 拾掇