A3
noun [ U ] uk/ˌeɪˈθriː/ us/ˌeɪˈθriː/
(英国标准的)A3纸(29.7 x 42厘米)
in the UK, paper that is a standard size of 29.7 centimetres by 42 centimetres
a sheet of A3 一张A3纸
A3 paper A3纸
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