名词
中文翻译：锯齿状护栅
同义词：
['serrated edge', 'serrated strip', 'serrated guardrail']
例句：
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1. The fence was made of a serrated guard to prevent animals from getting through.
这道篱笆是用锯齿状的护栏制成的，以防止动物穿过。
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2.The car's door had a serrated guard for added security.
汽车的门上有一个锯齿状的防护装置，以增加安全性。
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3. The construction workers used a serrated guard to protect the workers from falling debris.
建筑工人使用一个锯齿状的防护装置来保护工人免受坠落物的伤害。