以下为句子列表：
英文: An initial check of the spacecraft showed that several pyrotechnic devices failed to fire and deploy the chutes, but the reason for the multiple failures was unclear, Andrew Dantzler, NASA solar system division director, said.
中文: 美国国家宇航局太阳系分部负责人安德鲁·丹泽尔说，对返回舱的初步检查显示几个点火装置点火失败，导致降落伞未能打开，但是导致重大失败的原因尚不清楚。
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