简介：Researchers from New Zealand investigate about the mysterious attacks of orcas to great white sharks in South Africa in 2017 and seek to discover if it will happen again. 译文(2): 来自新西兰的[ZiYuantun.Com]研究人员调查了2017年南非虎鲸对大白鲨的神秘攻击，并试图发现是否会再次发生。
简介：A group of tired commuters have caught the last train home, ready to hop into their beds for the night. However, their train soon veers off-course and crashes into an abandoned tunnel. The three surviving commuters; withdrawn mother Yi Ling, her son Lucas