face about

• • [美国英语]【军事】(使)向后转：(使)转过身；(使)折回：

    The troops were ordered to face about.

    部队接到命令要向后转。

  • (突然)改变主意：

    The middle of an election is no time to face about.

    选举中期改变主意是不合时宜的。