首都: capital (city)...
积极: active, energetic, vigorous, positive (outlook), proactive...
效益: benefit, effectiveness, efficiency...
未知数: unknown quantity...
累计: to calculate the running total, cumulative, total, in total...
圈子: circle, ring, (social) circle...
晶莹: sparkling and translucent...
断断续续: intermittent, off and on, discontinuous, stop-go, stammering, disjointed, inarticulate...
混乱: confusion, chaos, disorder...
出版: to publish...
