Some researches show us when and why the following things should HR replaced.

一些研究告诉我们人力资源什么时候以及为什么应该被取代。

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When and why, you may ask, did this differentiation occur?

你也许会问，什么时候，为什么有这种区分的发生？

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When and why rules technology is better than familiar alternatives.

何时以及为何，规则技术比常见的选择更好？

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"That is why hundreds of thousands are fleeing from one place to another and are returning when the situation permits,"

VOA: standard.2009.06.21

When and why, you may ask, did this differentiation occur?

你也许会问，什么时候，为什么有这种区分的发生？

耶鲁公开课 - 旧约导论课程节选

When and why did some Israelites adopt a Yahweh-only position, and seek to differentiate what they would call a pure Yahwism from the cult of Baal, for example?

何时，为何以色列人采纳了耶和华，唯一的地位，并且试图与他们所说的纯耶和华崇拜区别,比如说，与Baal宗教？

耶鲁公开课 - 旧约导论课程节选

The FAA strictly regulates who, where, when and why unmanned air craft will be flown.

CENTERFORSECURITYPOLICY: Fighting Words on UAVs

Since he was at Occidental College as Barry Soetero when and why did he change his name?

FORBES: Sarah Palin Goes Grizzly At Glenn Beck Rally

Do you remember when and why you first decided to become an entrepreneur?

FORBES: The Day A One-Armed Man Turned Me Into An Entrepreneur