While there's no conclusive evidence on exactly what we should be eating and when, the consensus is that we should listen to our own bodies and eat when we're hungry.
2019年12月四級(jí)真題（第三套）閱讀 Section B
A new study has failed to find any conclusive evidence that lifestyle changes can prevent cognitive decline in older adults.
出自-2016年6月聽(tīng)力原文
While studies have shown that acrylamide can cause neurological damage in mice, there is no conclusive evidence that it causes cancer in humans.