单词	cost-efficient
释义	cost-efficient adjective cost-ef·​fi·​cient ˈkȯst-i-ˈfi-shənt  -ˌfi- : cost-effective Word History First Known Use 1913, in the meaning defined above
随便看	lifesaving lifesavings lifesome lifespans lifestyle lifestyles lifetime lifetimes lifeward lifeway lifeways lifework lifeworks lifeworld lifey Liffey Lifford LIFO lift lift a finger lift bridge lift down lift ground lift net lift one's gaze

英语词典包含469781条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。