名词
中文翻译：踏印凹陷同义词
同义词：
['tread mark', 'impression']
例句：
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1. The ancient stone carvings on the wall are a testament to the skill of the craftsmen who created them.
墙上的古老石刻是创造它们的工匠技艺的见证。
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2. The tread concavity of the road surface is an important factor in determining its durability.
道路表面的踏印凹陷是决定其耐用性的一个重要因素。
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3. The researcher carefully examined the tread concavity of the ancient pottery and found evidence of human interactionwith it.
研究者仔细检查了古代陶器的踏印凹陷，并发现了人类与它互动的证据。