in full retreat的用法和样例：
- The enemy troops were in full retreat.
- The army was in full retreat(=retreating very quickly).
- Enemy is apparently in full retreat towards the west.
- The remnants of the German armies in France were now in full retreat.
- The company tried to open branches in America but it has been in full retreat since it lost millions of dollars.
- Next day the Germans were in full retreat and hotly pursued on the whole of the Eighth Army front.