单词：main ground water
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Our school Our school is a beautiful garden school. When you enter the school gate, you will see there is a main road leading straight to the teaching buliding in the middle of our school. On the each side of the road, there is a flower bed where var
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Quantum communication boasts ultra-high security as a quantum photon can neither be separated nor duplicated. It is hence impossible to wiretap, intercept or crack the information transmitted through it. Anton Zeilinger, an Austrian physicist at the
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The more you know about the various heating systems that are available on the market today, the better able you will be to choose the best one for your home. Obviously, your main goal (besides being comfortable), is to have a heating and air conditio
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