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月六級真題（第二套）閱讀 Section B
柯林斯高階英漢雙解學習詞典釋義
ADJ
增加的;遞增的
Incremental is used to describe something that increases in value or worth, often by a regular amount.