在传统角色的反转中，保罗留在家中照顾孩子。

In a ___reversal of traditional roles, Paul stayed at home to look after the children.

这个角色的反转只是暂时的，很快原有的等级制度就恢复了。

This ___reversal of roles was only temporary, and soon the original hierarchy was restored.

公司政策的转变代表了其早期战略的完全逆转。

The company's policy shift represented a complete ___reversal of its earlier strategy.