n. 踏脚石, 进身之价
在线英汉词典
stepping-stone的短语、例句：
stepping-stone n (a) flat stone (usu one of several) providing a place to step on when crossing a stream, river, etc on foot （过河等用的）踏脚石. (b) (fig 比喻) means or stage of progress towards achieving or attaining sth 藉以达到目标的手段或阶段
a first stepping-stone on the path to success 通向成功的第一步.

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