MEANING/意义
七七
EXAMPLES/列句
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七七得四十九seven multiplied by seven is forty-nine
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这里七七八八的事情很多。There are many things of different kinds here.
COMBINATIONS/组合
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七七八八bits and piece,of all kinds
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七七事变Marco Polo bridge incident of 7th July 1937,which sparked the World War 2 between Japan and China