lag: English has three distinct words lag. The verb ‘fall behind’ [16] is perhaps of Scandinavian origin (Norwegian has lagga ‘go slowly’), although a link has been suggested with the lag of fog, seg, lag, a dialect expression used in children’s games which represents an alteration of first, second, last. Lag ‘insulate’ [19] comes from an earlier noun lag ‘barrel stave’, which was also probably borrowed from a Scandinavian language (Swedish has lagg ‘stave’); the original material used for ‘lagging’ was wooden laths.
And finally the noun lag ‘prisoner’ [19] seems to have come from an earlier verb lag, which originally meant ‘steal’, and then ‘catch, imprison’; but no one knows where this came from.
lag (v.)
"fail to keep pace," 1520s, earlier as a noun meaning "last person" (1510s), later also as an adjective (1550s, as in lag-mon "last man"), all of uncertain relationship, possibly from a Scandinavian source (compare Norwegian lagga "go slowly"), or some dialectal version of last, lack, or delay. Related: Lag; lagging. The noun meaning "retardation" is from 1855. First record of lag time is from 1951.
中文解释
1. lag behind sb. 落后于某人。2. 谐音“落(这是个多音字，这里最好念：la)哥”----落后的人。3. or from some dialectal version of last, lack, or delay.
实用例句
1. There's a time lag between infection with HIV and developing AIDS.
从感染艾滋病病毒到病发有一段滞后期。
来自柯林斯例句
2. As conceit makes one lag behind, so modesty helps one make progress.
骄傲使人落后, 谦虚使人进步.
来自《简明英汉词典》
3. Ten minutes later, some of runners in the race began to lag.
十分钟后, 有些参赛的人开始落后了.
来自《简明英汉词典》
4. I staved off jet lag with a bath and an early night.