《资治通鉴·汉纪·汉纪十八》
敌人必然会估计出我军进退的时间，稍稍撤退，追逐水草，深入山林。
虏必商军进退，稍引去，逐水草，入山林。
The enemy will inevitably estimate the time of our army's advance and retreat, retreat slightly, chase after water and grass, and go deep into the mountains.
<s>[INST] Give the modern Chinese and English translation for the following Classical Chinese passage: 虏必商军进退，稍引去，逐水草，入山林。 [/INST] Modern Chinese: 敌人必然会估计出我军进退的时间，稍稍撤退，追逐水草，深入山林。 English: The enemy will inevitably estimate the time of our army's advance and retreat, retreat slightly, chase after water and grass, and go deep into the mountains.</s>
Give the modern Chinese and English translation for the following Classical Chinese passage: 虏必商军进退，稍引去，逐水草，入山林。
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Modern Chinese: 敌人必然会估计出我军进退的时间，稍稍撤退，追逐水草，深入山林。 English: The enemy will inevitably estimate the time of our army's advance and retreat, retreat slightly, chase after water and grass, and go deep into the mountains.
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