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关于《朗文当代高级英语辞典》
800 number
noun
800 number
also
800 line, toll-free number
American English
;
toll-free number
American English
a telephone number which one can telephone without paying for the call
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noun
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747
noun
800 number
noun
a
indefinite article
A
1
noun
A
2
a/c
a cappella
adjective
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