协理署长
Associate Director
以上为机器翻译结果，长、整句建议使用 人工翻译 。
行星研究学家艾伦·斯坦，NASA前科研协理署长，称新理论“十分新颖独特，”但不容易证明其正确性。
Planetary scientist Alan Stern, former NASA associate administrator for science, said it is a "very clever new idea," but one that is not easily tested to learn whether it is right.
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