猎人在森林里发现了一只松鸡。
The hunter saw a ___grouse in the woods.
他总是在会议上抱怨办公室的咖啡不好喝。
He constantly ___grouses about the office coffee during meetings.
他坐在角落里，低声抱怨着天气太热。
He sat in the corner, ___grousing about how hot the weather was.
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