名词
中文翻译：Unknown
同义词：
['gnawing mark', 'gnawing impression', 'gnawing imprint']
例句：
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1. The dog had a gnawing trace on its mouth that made it look like it was constantly chewing.
那只狗嘴里有一道啃咬的痕迹，让它看起来像是在不停地嚼东西。
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2. The scientist found a gnawing mark on the wall that suggested someone had been digging in the past few days.
科学家在墙上发现了一道啃咬的痕迹，暗示有人在过去几天里挖过。
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3. The old tree had a gnawing trace that indicated it had been heavily used for many years.
这棵老树有一个啃咬的痕迹，表明它被频繁使用了很多年。