Enclosed you will find our Sales Contract No. 354 in duplicate of which please countersign and return one copy to us for file.

请看附件里面我方的354号销售合同一式两份，请复签完后并给我放返回一份存档。

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The tight race is almost a duplicate of the elections in Georgia and South Dakota last month that pitted a Republican challenger against a Democratic incumbent.

这次紧张的竞选几乎是上个月在佐治亚州和南达科他州选举的翻版，由一个共和党的挑战者竞争一个现任的民主党人。

《柯林斯英汉双解大词典》

It allows multiple keys, which raises the possibility of duplicate nodes in a group.

它允许多个键，提高了一个分组中重复节点的可能性。

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In terms of cost differentiation between duplicate funds, Fuhr said investors need to be careful in understanding that often annual costs are adjusted based on level of assets in the fund.

FORBES: In ETF Space, Not Easy Fending Off The Copy Cats

The Blackbirds came in trying to duplicate the success of fellow NEC member Robert Morris, which stunned defending national champion Kentucky 59-57 in the opening round of the NIT on Tuesday night.

WSJ: Blackbirds start slow, wilt at end in First Four

In his latest paper Drexler and co-author Chris Phoenix of the Center for Responsible Nanotechnology (CRN) propose a manufacturing model in which nanomachines could duplicate themselves without the risk of runaway replication.

BBC: Nanomachine "factories" could one day sit on a desktop