(lagged, lagging)no obj.
1
- fall behind in movement, progress, or development; not keep pace with another or others落在后面：
they stopped to wait for one of the children who was lagging behind.
他们停下来等落在后面的孩子。
1
- （亦作time lag）a period of time between one event or phenomenon and another时差, 时间间隔：
there was a time lag between the commission of the crime and its reporting to the police.
作案与报警之间有一段时差。
2
- Physics a retardation in an electric current or movement【物理】相位滞后。
派生词
lagger
noun词源
early 16th cent. （as a noun in the sense 'hindmost person in a game， race， etc.'， also 'dregs'）： related to the dialect adjective lag （perhaps from a fanciful distortion of LAST1 , or of Scandinavian origin: compare with Norwegian dialect lagga 'go slowly'）.
lagged, lagging
with obj.（一般作be lagged）enclose or cover (a boiler, pipes, etc.) with material that provides heat insulation给（锅炉、管道等）包绝热层：as adj. lagged a lagged hot-water tank.包有绝热层的热水箱。
派生词
lagger
noun词源
late 19th cent.: from earlier lag 'piece of insulating cover'.
Bri. informal <英, 非正式>
- a person who has been frequently convicted and sent to prison惯犯, 旧犯：
both old lags were sentenced to ten years' imprisonment.
两名惯犯都被判处10年监禁。
lagged, lagging
with obj. archaic arrest or send to prison〈古〉逮捕, 投入监狱。
词源
late 16th cent. （as a verb in the sense 'carry off， steal'）： of unknown origin. Current senses date from the 19th cent.