《宋书·列传·卷八十七》
刘勔于是做大蛤蟆车装土，用牛皮蒙上，三百人推进去塞城壕。
勔乃作大虾蟆车载土，牛皮蒙之，三百人推以塞堑。
Liu Xi then made a big toad car to carry the earth, covered it with cowhide, and had 300 people push it in to fill the moat.
<s>[INST] Translate the following Classical Chinese text into modern Chinese: 勔乃作大虾蟆车载土，牛皮蒙之，三百人推以塞堑。 [/INST] 刘勔于是做大蛤蟆车装土，用牛皮蒙上，三百人推进去塞城壕。</s>
Translate the following Classical Chinese text into modern Chinese: 勔乃作大虾蟆车载土，牛皮蒙之，三百人推以塞堑。
user
刘勔于是做大蛤蟆车装土，用牛皮蒙上，三百人推进去塞城壕。
assistant