concatenate v. 连结;连锁; 连接,串联,并置;
concatenation n. 连结,一连串;
concave adj. 凹的;
concavity n. 中央凹陷;凹洼;凹状;
conceal vt.把…隐藏起来;
concealment n. 隐匿;隐蔽;躲藏;
concede v. 承认(为正确),让步
conceivable adj. 想像得出的,可信的;
conceive vt.设想,以为;怀孕;
concentrate vt.&vi.浓缩,提浓;
concentrated adj. 全神贯注的;
concentration n.集中;专注;浓缩;
concentric a. 同中心的,集中性的;
concept n.概念,观念,设想;
conception n.概念,观念,想法;
conceptive adj. 概念的;
concern n.关心,挂念;关系