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1·Few observers believe the president will do an about-face and start spending more.

没有几个观察家认为总统将做出彻底改变并开始增加支出。《柯林斯英汉双解大词典》

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

刚过去的十二月，Facebook的隐私政策上演大变脸。

3·He threatened to stop helping us, but did a complete about-face.

他威胁要停止帮助我们，但是却来了个彻底的大转变。

4·Joost started by offering video through its own software application, but lost out to Hulu and did an about-face.

Joost曾经通过自己的软件提供看影像，但是输给了Hulu，最后不得不做出改变。

5·The about-face of Morris Chafetz, a doctor who served on the commission that recommended increasing the drinking-age to 21, has also raised eyebrows.

就连曾经在建议将饮酒年龄提高到21岁法定年龄委员会任职的医生Morris Chafetz，近来态度也发生了180度的转变，令人大跌眼镜。

6·Foreign Minister Takeaki Matsumoto has committed an about-face on policy by telling his ministry to refrain from vouching for the safety of Japanese food.

外交大臣Takeaki Matsumoto承认了政策上发生转变，告知他的内阁停止声称日本食品是安全的。

7·Helio was originally conceived as a power user's carrier, but it did an unexplained about-face and decided to go for the social-networking youth when it launched.

Helio在筹备的时候标榜为“超级玩家的运营商”，但在发布的时候来个大变脸，决定去拥抱社交网络的年轻人。

8·The most striking about-face has come from John McCain, who played a leading role in promoting cap and trade, introducing a bill broadly similar to Waxman-Markey in 2003.

在2003 年，他曾经在推行排放配额制度中扮演主要角色，提出了一项和维克斯曼和马基法案大同小异的法案。

9·He accused the Government of refusing to face facts about the economy.

他指责政府拒绝正视有关经济的现实情况。《柯林斯英汉双解大词典》

10·She was forced to face up to a few unwelcome truths about her family.

她不得不正视有关她家的几桩尴尬事。《牛津词典》