late 14c., "making, producing immediate effect, active, effective," from Old French efficient and directly from Latin efficientem (nominative efficiens) "effective, efficient, producing, active," present participle of efficere "work out, accomplish" (see effect). Meaning "productive, skilled" is from 1787. Related: Efficiently.
权威例句
1. The pill is the most efficient method of birth control.
服用避孕药是最有效的避孕方法。
2. These people are very efficient, very organized and excellent time managers.
这些人做事效率很高,井井有条,并且十分善于管理时间。
3. The process of replication is very quick and efficient.
复制的过程快捷、高效。
4. Service was outstandingly friendly and efficient, falling down on only one detail.
服务态度极佳,效率也蛮高,仅在一个小地方不尽人意。
5. An efficient bulb may lighten the load of power stations.
一个节能灯泡也许就能减轻发电站的负荷。
词语辨析
【efficient, effective】
这组词都有“有效的”的意思,其区别是:
efficient: “效率高的”,“有能力的”,用以指人或物,着重有效地利用时间、精力并取得预期效果。如:The German telephone system is highly efficient. (德国的电话系统效率很高。)
effective: 常用以指物,强调能产生某种预期的效果。如:effective medicine, effective method等。