Unless we repulse the enemy's attacks and defeat him, even places held by the guerrillas will come under enemy control, and then it will be impossible to establish base areas.

就是游击战争控制的地方，如果不粉碎敌人的进攻，不战胜敌人，自己控制的地方就要变成敌人控制的地方，也无从建立根据地。

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The enemy met with a repulse.

敌人被击退了。

《新英汉大辞典》

At this stage we shall still have to repulse a certain number of offensive campaigns the enemy may launch at the front.

在这个时期内，还要打退正面敌人一些可能的战役进攻。

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