用about-face造句子，“about-face”造句

Gary Samore, a former senior American official who helped negotiate the 1994 agreement, says the Bush administration-once cynical about that accord-has now made a "fundamental about-face".

This past December, Facebook did an about-face on privacy.

Once he realized how important getting into college was, his grades did an about-face. Now, he's getting nothing but As.