Definition
to abruptly retreat or flee, often due to fear or a perceived threat.
（通常因恐惧）转身逃跑。
They turned tail and ran the moment the enemy forces approached.
他们一看到敌军接近，就转身逃跑了。
The little dog turned tail and ran as soon as it saw a big dog.
这只小狗一看到大狗，就转身逃跑了。
Upon hearing that the police were coming, the group of youngsters immediately turned tail and ran.
一听到警察要来，那群年轻人立刻转身逃跑了。