单词	rille
释义	rille /rɪl / (also rill) noun Astronomy A fissure or narrow channel on the moon’s surface.He prefers looking in and near smallish craters and the rilles - long, sharp lines or faults.... But we know that the Moon is not spherical: rather, it is mountainous in some regions, deep canyons and rills permeating the surface elsewhere, and it is pockmarked with craters, too. Origin Mid 19th century: from German (see rill).
随便看	series-resonant series spectrum serif serifed seriffed serific serigala serigraph Indon Indonesia Indonesian indoor indoor cricket indoors Indo-Pacific Indore indorse indorsement in doubt indoxyl Indra indraft indraught indrawn indri

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