∪: union of 并,合集 “A∪B”读作:the union of A and B 33 ∩: intersection of 交,通集 “A∩B”读作:The intersection of A and B 34 ∫: the integral of ……的积分 “∫x”读作...
The number of Japanese tourists who travelled abroad increased dramatically from just under 5 million to around 15 million between 1985 and 1995, a rise of about 10 million...
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