单词：high strength suspension insulator
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I cried a tear Oh I did try I was confused You cleared my mind I sold my soul You bought it back for me And held the earth You gave me dignity Somehow you needed me You gave me strength To stand alone
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This is Scientific American's 60-Second Science. I'm Steve Mirsky . Got a minute ? Athletes have obviously been tempted to use performance enhancing anabolic steroids. Drug testing may discourage such use. But a new study finds that some of the perfo
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Bike-to-Work Day is held every year across North America on the third Friday of May. It was started by the League of American Bicyclists in 1956. Its aim is to promote the bicycle as a serious choice of getting to and from work. In today's world wher
世界节假日博览
Bike-to-Work Day is held every year across North America on the third Friday of May. It was started by the League of American Bicyclists in 1956. Its aim is to promote the bicycle as a serious choice of getting to and from work. In today's world wher
世界节假日博览
Bike-to-Work Day is held every year across North America on the third Friday of May. It was started by the League of American Bicyclists in 1956. Its aim is to promote the bicycle as a serious choice of getting to and from work. In todays world where
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