Initially, order keys corresponding to line items shipped by mail or sea during the qualifying time period are extracted from the LINEITEM table.

一开始，从 LINEITEM 表中提取规定时期内通过邮寄或海运发货的行项目所对应的订单号。

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This may be ensured by repeating each phase step for a period extending the mean duration of the cardiac cycle and causing a corresponding extension in the acquisition time.

为延伸平均心脏周期时间的阶段而重复的每一个相位步骤使得这些得到保证，而且引起相应的数据获得时间的延长。

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Performance reflects results for the hypothetical index asset allocation portfolios during the corresponding time period, and are net of reinvested index dividends.

FORBES: A Performance-based Approach to Tapping Your Nest Egg