The money is not payable until January 31.

这钱要到1月31日才可支付。

《柯林斯英汉双解大词典》

On January 31, a musher named Seppala had to cross a frozen body of water called Norton Sound.

1月31日，一位名为塞帕拉的赶狗人必须穿越一个叫诺顿湾的冰冻水域。

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When the tiny creature arrived on January 31, she became the 40th black rhino to be born at the reserve.

当这只小家伙在1月31日出生时，她成为了在该保护区出生的第40头黑犀牛。

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Results will be kept secret until the night of the award ceremony: January 31 at the Staples Center in Los Angeles,California.

VOA: standard.2010.01.25

You'll find out if it takes home the trophy when the Grammys are handed out in Los Angeles on January 31.

VOA: standard.2010.01.24

Thermo Fisher Scientific (TMO) reports its fourth quarter earnings on Thursday, January 31, 2013.

FORBES: Thermo Fisher Scientific

On January 31, 2013 the company opened a 15, 000 square foot flagship store in Shanghai.

FORBES: Sephora: Department Stores Cannot Stop Its Global Growth

On January 31, 2012, money supply hit a near decade low of 12.4 percent year-over-year growth.

FORBES: World Starting To See Big Bargains In Chinese Stocks