| 例句 |
undersurfacesnounpl. of undersurface the side or part facing downward from somethingpainted the undersurface of the plane blue bottoms, underbellies, underbodies, underparts, undersides bellies, soles, toesbases, feet(also foot), floors, grounds, seats, underpinningsundercarriages faces, tops acmes, apexes(or apices), climaxes, crests, crowns, culminations, heights, high-water marks, meridians, peaks, pinnacles, roofs, summitscusps, heads, points, tips, tip-tops, zeniths |