DER stands for Distinguished encoding Rules, a standard for data encoding, and arm is the ASCII-armored-64 format.

DER代表Distinguished Encoding Rules，它是数据编码的标准，并且arm是ascii - armored - 64格式。

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The young man felt a touch on his arm and saw Mrs. Van der Luyden looking down on him from the pure eminence of black velvet and the family diamonds.

年轻人觉得胳膊被碰了一下。他发现范德卢顿太太穿一身名贵的黑丝绒，戴着家族的钻石首饰，正居高临下地看着他。

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Der Ultra-Marathonläufer Hauke König läuft in Hamburg mit seiner Tochter Enna im Arm die letzten Meter.

超马拉松赛亚军豪克国王与他的女儿在手臂上恩纳米汉堡。

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Grant Elliott shared 71 with Taylor before he was the first of two wickets for burly left-arm spinner Roelof van der Merwe, who extracted considerable turn at a sharp pace.

BBC: South Africa too strong for Kiwis