A pair of oxen were drawing a heavily loaded wagon¹ along the highway, and, as they tugged²（用力拉） and strained at（紧拖） the yoke³, the axletrees（轮轴） creaked and groaned⁴ terribly. This was too much for the oxen, who turned round indignantly（愤怒地） and said, "Hullo, you there! Why do you make such a noise when we do all the work?"

 

They complain most who suffer least.

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