snowoutn.雪沉降物snown.雪；积雪；下雪vi.下雪vt.使变白；雪覆盖snow thrower扫雪机snow clearer铲雪车snow deposit雪层snow erosion雪蚀snow pudding蛋白布丁snow-whiteadj.雪白的；纯白的snowmobilistn.雪上汽车snow removal积雪的清除snow mapping积雪制图snow rollers雪尺