Today is the seventh day of the seventh lunar month.

今天是农历的七月初七。

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It's the seventh day after Christmas.

这是圣诞节过后的第七天。

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I asked her on the sixth or seventh day.

在第六天或第七天的时候我问她。

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However, Black said boys and girls are welcome to join even if not from Seventh-day Adventist families.

WSJ: Amid Boy Scout turmoil, other groups hope to grow

Seventh-day Adventists, who eat little or no meat, suffer far less from cancer than the average meat-eating American.

FORBES: Connect

There are sites for Seventh-day Adventists, Mormons, Baptists, seniors, deaf singles and heavyset folks in the U.S. and several overseas markets.

FORBES: Magazine Article