lag [læg]
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基本释义
vi.走得慢,落后;n.滞后,(时间上的)间隔
英英释义
to move or make progress so slowly that you are behind other people or things
参考例句
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。
There is a time lag of about fifteen years. 时间上有一段约15年的间隔。
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