The announcement came two days after release of a sharply-worded report from NASA's independent Aerospace Safety Advisory Panel that deemed the existing plans too risky.
Dan told the BBC the monitoring and caring for a severely disabled child meant neither he or his partner got much sleep, were exhausted and also had two other children to care for.
，这一点在Line官方版本下载中也有详细论述
冒充军警人员招摇撞骗的，从重处罚。
结论：在不确定性中构建非对称优势