| 单词 | planetarium |
| 释义 | planetarium /plan'i tair"ee euhm/, n. , pl. planetariums, planetaria /-tair"ee euh/. 1. an apparatus or model representing the planetary system. 2. a device that produces a representation of the heavens by the use of a number of moving projectors. 3. the building or room in which such a device is housed. [1765-75; < NL, n. use of neut. of L planetarius PLANETARY; cf. -ARIUM] |
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