Koehn n. (Koehn)人名;(德)克恩
- MS. KOEHN: Leaders need to think and act as entrepreneurs.
科恩: 领导人需要像企业家那样思考和行动。 - "Orbits change, " Koehn says. "They change due to interactions with major planets and large asteroids.
科恩说:“轨道的变化,归因于这些小行星与大行星和较大的小行星之间的交互作用。 - "When our project started in the late '90s, the risk of dying from an asteroid impact was approximately the same as dying from an airplane crash, " says Koehn.
据科恩介绍,“我们的风险评估项目开始于上世纪90年代末期,那时小行星撞击的风险几率被认为与飞机失事的几率大约一致。
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