| 单词 | astro- |
| 释义 | astro- or astr- pref. 1. a. Star: astrophysics. b. Celestial body: astrometry. c. Outer space: astronaut. 2. The aster of a cell: astrosphere. [Greek, from astron, star; see ster-3 in the Appendix of Indo-European roots.] |
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