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3又8分之一:three and eighth;120/317:one hundred and twenty over three hundred and seventeen
a/b:a divided by b,a over b;a不等于b:a not equals to b
a大于等于b:a equal to or large than b:a小于等于b:a equal to or less than b
( ):round brackets,parentheses;[ ]:square brackets
〔 〕: angular brackets;{ }:braces
a∈W:a is a menber of set W ;A是W的一个子集:A is a subset of W, set A is contained in set W
s→F:s map into F; ∴:therefore; ∵:because
98℃:nighty eight degrees centigrade 32℉:thirty two degrees Fahrenhelt
5%:five pecent 5‰: five permille
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