flag day
短语n. （英国的）旗日, 公益事业募捐日
词形变化
flag days
复数
flag days
释义与例句
n.
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1.
A day on which a registered charity raises money, usually by selling small lapel flags.
爱尔兰 -
2.
A day on which a registered charity raises money, usually by selling small stickers.
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3.
A day designated for changing to an incompatible system.
计算机 工程 数学 -
4.
A change which is neither forward nor backward compatible.
计算机 工程 数学