Each period of ten days was marked by the appearance of special groups of stars called decans.

每隔10天的周期就会有一些特殊的恒星群出现，这些恒星群被称为 decans。

youdao

He built up the business over a period of ten years.

他用了十年时间把这个企业创建起来。

《牛津词典》

Upon registration, a trademark is usually granted for a period of ten years.

商标一经注册，其有效期通常为十年。

youdao

Professor Burgess says the first ten years of the twenty-first century are expected to register the most attacks of any ten-year period.

VOA: special.2009.06.16

Or my life would've gone better for this period of ten years, but then it would've become worse.

或者说我的生活在这十年本来可以更好，然后它会变得糟糕。

耶鲁公开课 - 死亡课程节选

There were probably a number of firms that, over that ten-year period, went out of business.

在这10年间,可能有很多企业已经破产

耶鲁公开课 - 金融市场课程节选

A123 said that during a ten trading day period five months following the initial closing date of the transaction and during another ten day period six months following the close, it has the right to require the investors to buy in each such period up to an additional 6, 250, 000 shares for an aggregate of up to 12.5 million additional shares.

FORBES: A123 Slides; Raising $25.4M In Below-Market Stock Deal

He was, of course, campaigning for other Republican candidates--popping up, over a period of ten days, in eight cities.

FORBES: As a businessman, he's been mixing with a sketchier crowd.

For those enrolled in secondary education, two courses at this level of schooling are completed in each academic year which corresponds to a period of ten months.

UNESCO: Integral School Literacy Programme