Improving the council 's legitimacy risks reducing its efficiency .

提高安理会的合法性可能会降低效率。

Iraq and afghanistan were lessons in the impotence of force without legitimacy .

伊拉克和阿富汗正是没有合法授权下动武的教训。

Mr porter is right to worry that capitalism is suffering a crisis of legitimacy .

波特先生对资本主义正遭受的正统性危机感到担忧，这一点无可厚非。

Legitimacy of a kind matters deeply .

某种合法性是大有关系的。

But how to enhance its legitimacy ?

但如何增强它的合法性？