| 正面 | 7049.planetary 英 ['plænɪt(ə)rɪ]美 ['plænətɛri]     |
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| 背面 |     释义： 1、im- "not, opposite of" => "这里引申为：free from, exempt from" + mun- + -ity.2、字面含义：free from or exempt from public service or duty, exempt from service or obligation. 也就是不用做公共服务，免除了公共服务。3、按咱们古代的说法：就是不用服劳役。由此引申为：豁免、免除、免疫。adj. 行星的 例句： 1. Within our own galaxy there are probably tens of thousands of planetary systems.在我们自己的星系里可能有数以万计的行星系。 planetary 行星的来自planet,行星，-ary,形容词后缀。 planetary (adj.)1590s; see planet + -ary. Probably from Late Latin planetarius "pertaining to a planet or planets," but this is attested only as "an astrologer." Planetary nebula, so called for its shape, attested from 1785." |