相关单词同义词unreachable, 近义词 inaccessible 难接近的, unavailable 得不到的, unattainable 难到达的, out of stock 已脱销, untouchable 不可接触的, unprocurable 不可获得的临近词UNO, unoil相似词unnecessary, unnerve, unnoticed, unobserved, unobtrusive, unoccupied, unofficial, unopened, 返回 unobtainable