turn tail

基本解释

If it is not squeaky clean, investors could turn tail, raising the country's borrowing costs.
如果这个市场不是一尘不染的（squeaky clean），投资者有可能撤离，从而提高了这个国家的借款成本。
At the Pentagon, however, senior naval officials appear smugly confident that the Chinese would turn tail once the U. S. carriers show up like the cavalry.
可是，五角大楼的资深海军军官却有点满不在乎，他们认为一旦美国航空母舰像骑兵那样在海上出现时，中国人就逃跑了。
Setting the issue of statistics aside, however, the second point is an even larger one: Just why is it time to turn tail and run simply because your tool of choice is not number one?
然而，撇开统计数字的问题不谈，第二个问题更严重：为什么仅仅因为所选的工具不是最好的就弃而不用？
nini2010.blog.163.com

"And then I turn around and I see this little puppy dog looking up at me, wagging her tail,and uh, everything just left.I got calm.

At the first sign of trouble, an Israeli soldier says, the peacekeepers will turn tail and run.
ECONOMIST: Road-mending in Lebanon
Whether the recent bearishness will run deeper or turn tail, time will tell.
FORBES: Gold Sentiment Sour Like 1976, 1999 Dream Buys
And then, just when we think it is ready to scale its final peak, gold could turn tail and run for the valley.
FORBES: Runaway Government Spending Keeps Gold Bull Breathing