This sounds like so much hot air, but the near $13 billion fortune this entrepreneur has amassed comes from practical achievements rather than hypothetical ones.
2018年6月六級真題（第三套）閱讀 Section A
Today's demographics show that the middle class is disappearing and now the richest one percent of the population has amassed more wealth than the bottom 90 percent.
2018年12月六級真題（第一套）聽力 Section C
柯林斯高階英漢雙解學習詞典釋義
VERB
積聚；收集
If you amass something such as money or information, you gradually get a lot of it.