Well, to continue, as I mentioned earlier, there is also research that demonstrates that individuals perform worse, not better on tasks when other people are there.
出自-2012年12月聽力原文
英語六級真題
This important study demonstrates that the more fiber you eat during your high school years, the lower your risk is in developing breast cancer in later life.
2017年6月六級真題（第二套）聽力 Section B
柯林斯高階英漢雙解學習詞典釋義
VERB
證明;論證;表明;說明
To demonstrate a fact means to make it clear to people.