steppingstone的翻译，读音

例句

Each of our troubles is a steppingstone. 每一个困难都是你的踏脚石. 。

Are good grades a steppingstone to college? 好的成绩是上大学的踏脚石吗?。

Many people use education as a steppingstone to a life. 许多人将咎育坐为赢得更好赌生活的手段。

Many people use education as a steppingstone to a better life. 没有更多的预言，城市-让生活更美好！ 。

It's a national standard that can spread globally and be a steppingstone to even higher fuel standards in future. 他说，“这是一项全国性的标准，可以扩展到全球，为未来设立更高的燃油标准做铺垫。