单词：expansions
音标：[iksˈpænʃənz] ；
n. 扩大( expansion的复数形式 ); 扩张; 扩张物; 膨胀物
n. the act of increasing (something) in size or volume or quantity or scope
n. a function expressed as a sum or product of terms
n. a discussion that provides additional information
n. a function expressed as a sum or product of terms
n. a discussion that provides additional information