围点打援

词语解释

围点打援[ wéi diǎn dǎ yuán ]

⒈  一种战术，抽出部分兵力围困据点，然后使用主力部队打击救援据点的援军。

英besiege the stronghold to annihilate the enemy relief force; encircle an enemy post and trounce reinforcements coming to its aid;