In 2009, at least 3,500,000 people in the US sustained a TBI, either with or without other injuries.

2009年，它处受伤不计，至少35万美国民众患有“外伤性脑损伤”。

Falls, car crashes, and being struck by an object are the leading causes of TBI.

衰落、车祸或被物体砸中都是TBI的主因。

Why didn't we know about the TBI?

我们怎么不知道这创伤性脑损伤？

Dark forebodings How TBIs might contribute to longer-term neurological conditions such as dementia is less clear.

黑暗的预感 TBI 如何导致痴呆等长期神经系统疾病尚不清楚。

TBIs are accepted as increasing the risk of developing dementia—in 2020, The Lancet commission on dementia, convened by academics to recommend ways to tackle the rise in neurodegenerative conditions, added TBIs to their list of causative factors.

TBI 被认为会增加患痴呆症的风险——2020 年， 柳叶刀痴呆症委员会由学者召集，旨在推荐解决神经退行性疾病增加的方法，将 TBI 添加到其致病因素列表中。