Strokes, which occur when blood flow to the brain is blocked, can kill brain tissue and are one of the worldwide leading causes of death and permanent disability.
发生在脑部血流阻断时的卒中可能杀伤脑组织，并且在世界范围内都是死亡和永久性致残的主要原因之一。
Gas explosions occur often in some recent years, gas explosions kill mine workers, and make much economic damage.
最近几年瓦斯事故发生频繁，瓦斯爆炸夺走了许多矿井工人的生命，给国家造成了重大经济损失。
Roughly 85 per cent of MRSA cases, which is treatable only with a few antibiotics, occur in hospitals, where infection can kill weakened patients.
大体来讲，发生在医院内的大约85%的MRSA病例，只能接受一小部分抗生素的治疗，并且能够使本已衰弱的病人死亡。
Roughly 85 per cent of MRSA cases, which is treatable only with a few antibiotics, occur in hospitals, where infection can kill weakened patients.
大体来讲，发生在医院内的大约85%的MRSA病例，只能接受一小部分抗生素的治疗，并且能够使本已衰弱的病人死亡。
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