名词
中文翻译：卵石床屏障
同义词：
['cobblestone bed', 'cobblestone barrier', 'stone bed', 'stone barrier']
例句：
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1. The rocky terrain of the mountain is a natural pebble-bed shield against the wind.
山区的岩石地形是一道天然的卵石床屏障，抵御着风。
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2. The ancient city walls were built with bricks and stones, forming a pebble-bed shield to protect its citizens.
古老的城墙是用砖石建造的，形成了一道卵石床屏障，保护市民的安全。
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3. The engineer used a pebble-bed shield to reinforce the foundation of the new bridge.
工程师用卵石床屏障加固了新桥的基础。