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But what is the origin of the usage as a prefix in the words. Does ex have a full form? 防爆标志ex d iic t6 gb是一个详细的电气设备防爆标识，它由多个部分组成。 ex是中国及国际电工委员会的防爆标志，表示该设备遵循gb3836和iec60079的防爆标准。 d代.
ExProsecutor Is 'Doubtful' Diddy Will Be Convicted on the Most Serious
In writing, though, the use of former doesn't seem so rare. Google dictionary has this information about the origin of ex:
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