adj.有弹力的；可伸缩的；灵活的；n.松紧带，橡皮圈； 变形： 复数：elastics 双语释义：adj.(形容词)有弹力的,有弹性的 able to spring back into shape after being stretched or bent可伸缩的; 灵活的 able to be changed if the situation changes; not fixedn.(名词)[U]松紧带,橡皮圈 elastic cord or material, usually made with r