The fundamental fix—reshaping how care is delivered and how doctors are paid in a wasteful, abnormal system—is likely to be achieved only through trial and error and incremental gains.
2016年6月六级真题（第二套）阅读 Section B
柯林斯高阶英汉双解学习词典释义
ADJ
增加的;递增的
Incremental is used to describe something that increases in value or worth, often by a regular amount.