But even if people are able to economically support a retirement at 65, over thirty years of potential inactivity is harmful to cognitive (認知的) and emotional vitality.
2019年6月四級真題（第一套）閱讀 Section B
英語六級真題
But poor diet and physical inactivity also each increase the risk of heart disease and have a role to play in the development of some cancers.
2019年12月六級真題（第一套）閱讀 Section A
柯林斯高階英漢雙解學習詞典釋義
ADJ-GRADED
無所作為的;不活動的;閑置的
Someone or something that is inactive is not doing anything or is not working.