A few weeks before her delivery date, Hillary was having a few problems.

离预产期还有几个星期的时候，希拉里遇到了一些问题。

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Please open the L/C 20 to 30 days before the date of delivery.

请在交货前20到30天开出信用证。

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Please open the L/C 20 to 30 days before the date of delivery.

请在交货前20到30天开出信用证。

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