单词：Morse code light
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It was becoming clear how the brave and expert thieves pulled off the world's biggest gem robbery. From a flight of stairs in the diamond center car park, they used a stolen key to open the door leading to the vault, and there they somehow managed to
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Thomas Alva Edison was born on February 11, 1847, on a cold snowy night in Milan, Ohio. His parents, Nancy and Samuel, named him Thomas after his great-uncle and Alva after Captain Alva Bradley, a good friend of his father. The family didnt call him
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BEIJING, Jan. 6 (Xinhua) -- Drivers who ignore yellow traffic lights will mostly receive warnings and education, and for the time being, they will not be penalized, the Ministry of Public Security announced Sunday. According to the newly-revised traf
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