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They give their new employees a day or two of orientation.

他们对新员工进行一两天的培训。

《柯林斯英汉双解大词典》

In fact, the concept of reuse has been well understood and leveraged right from the day of object orientation (OO).

事实上，重用的概念从面向对象（OO）诞生的那天起就已经被人们很好的理解并应用。

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's frenetic four-day orientation teems with games, skits, costumes, thumping music, and a limbo bar, says Lawrence Reyes, the company's manager of onboarding.

WSJ: Companies Try to Make the First Day for New Hires More Fun

The day of kindergarten orientation, I was in New York working at one of the biggest annual conferences in the area that my group covers.

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The Class of 1998 posed for its official picture on the Capitol steps in the morning before a day of closed-door orientation sessions that ranged from a general introduction to politics to logistical issue like the House bell system, how to vote and the layout of the sprawling Capitol Hill complex.

CNN: House welcomes its incoming frosh