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- 射击踏垛排有壕沟或胸墙的平台，士兵们站在其上射击
A platform lining a trench or parapet wall on which soldiers may stand when firing.
- 他在壕沟内一直坐到炮轰停止。
He sat out the bombardment in the trench.
- 部队在群山边筑起壕沟以防卫自己。
The troops were entrenched near the mountains.
- 敌军在河的对岸用坚固的壕沟防守。
The enemy were strongly entrenched on the other side of the river.
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