But, he conceded, "there has been some erosion in our support base."
但是，他承认到，“支撑我们的地基，肯定会有些磨损的”。
There are three different conceptions about base-level that are base level of erosion,...
基准面有三个不同的概念，即侵蚀基准面、沉积基准面和基准面。
There are three different conceptions about base-level that are base level of erosion,...
基准面有三个不同的概念，即侵蚀基准面、沉积基准面和基准面。
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