动词
中文翻译：Unknown
同义词：
['groaning', 'groaning', 'whimpering']
例句：
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1. The dog was gruntling in the backseat as they drove away.
当他们开车离开时，狗在后座上呻吟。
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2. She gruntled at the sight of the delicious meal.
她看到这道美味的菜时发出了呻吟声。
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3. The old man groaned with every step he took.
老人每走一步都呻吟着。