a3
n. A3号纸（尺寸为420×297mm 的）
例句
Currency conversion code A3 is calculated.
计算货币转换码a3。
A3: Because of long voyages and meager rations.
A 3：因为长期航行和有限的干粮。
A3 No books matching search criteria were found.
A3没有找到匹配搜索标准的书。
