单词：high-low voltage relay
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It must work without a hitch. 必须能够无故障运行。 It must work without a hitch. 必须能够无故障运行。 It has been tested for nine times. 我们已经对其进行了九次测试。 These elements seem to be working well under high
玩转商务英语900句
[00:37.80]Listen and read [00:41.85]This is our playground.Today is our sports day.Look!The games have begun. [00:52.58]Pupil A:Look!The relay race has begun.Guess,which class will win? [01:00.92]Pupil B:Class 1,I think. [01:04.68]Pupil C:I don't thi
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China has long depended on coal-burning power plants to fuel its explosive growth over the past three decades. As a result, air pollution has risen to alarming levels in central and eastern regions. Policymakers have been working hard to shift the co
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Athletics （田径） Track 径赛 100 m, 200 m, 400 m 100米，200米，400米 800 m, 1,500 m, 5,000 m, 10,000 m 800米，1500米，5,000米，10,000米 110 m hurdles, 400 m hurdles 110米栏，400米
奥运英语
sprint/middle-distance/long run短跑/中/长距离跑 marathon 马拉松 relay race; relay 接力 hurdles; hurgle race 跨栏 walking; walking race 竞走 steeplechase 障碍赛 high jump 跳高 pole jump; pole vault 撑竿跳高 long jump 跳远 hi
实用英语
Bird on a Wire 当我们行走在马路上时，经常可以看到成群的麻雀或乌鸦停落在几万伏的高压电线上，它们不仅不会触电，而且一个个显得悠闲自得。可是，你也知道，如果有人不小心碰到高压线
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