| 例句 |
cavesnounpl. of cave a naturally formed underground chamber with an opening to the surfaceKentucky's Mammoth Cave is actually a series of large chambers on five levels antres, caverns, delves(archaic), grots, grottoes(also grottos) abysses, chasms, gulfs, hollowscrawlways, galleries, subways, tunnelsexcavations, mines, pits, shafts, wellsbunkers, dugouts, foxholesburrows, coverts, dens, holes, lairs, lodges, shelters |