The visa is for 14 days, extendable to one month.

此签证有效期为14天，可延期到一个月。

《牛津词典》

In a good month, a stuntman can film up to 20 days, traveling around China to be on location.

一个月时间里，一个特技演员可以在中国各地拍摄长达20天的影片。

youdao

My intended nine-month journey to India had begun two days earlier at the port of Zeebrugge on the Belgian coast.

我计划中骑车九个月到印度的旅行两天前在比利时沿海港口泽布吕赫开始了。

youdao

Lawmakers are working against the clock, with a month-long recess scheduled to begin in a matter of days.

VOA: standard.2009.07.28

"They would say, 'We shall be wiring money to these schools in a month's time, in a week's time', and the days would go by."

VOA: standard.2010.03.04

One was a proposal he floated earlier this month to give 90 days of free pet food to people who adopt animals that would otherwise be in shelters or euthanized.

WSJ: Mayoral Candidate Catsimatidis Doesn't Lack for Ideas

Developers are in the market to make money and the current environment is saturated, their are now many apps on the apple platform that it has been very competitive to make money, the barriers to entry is hard and you have to wait days, month or even months to hear the faith of your applications.

FORBES: Three Areas Of Blackberry 10 That Will Decide RIM's Fate

During the last 9 trading days of September, 2011 the Dow Jones Industrial average fell 675 points in 2 days, regained almost 70% of that in the next 3 days only to end the month below the previous low 9 days earlier.

FORBES: Why The Buy And Hold Strategy Can Work: Part One