step-ladder
梯度性
1
The Step-ladder Financial Support for the Development of the Western Region
西部大开发的梯度性金融支持
2
But I found they were so large that I had to have a step-ladder made, twenty-five feet high, with steps fifty feet long each.
但是我发现它们是那麽的大以致于我必须制作一个二十五呎高且每一阶梯有五十呎长的梯子。
梯度性
短语
step-ladder method 梯级分配法
云梯
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