短语词组短語unworkable market 市場失霛unworkable seam 不可採煤層unworkable material 不宜加工材料unworkable deposit 無開採價值的鑛牀unworkable price 做不開的價格unworkable e 難運轉既unworkable concrete 難灌築混凝土unworkable plan 難實行計劃UNWORKABLE ADJ 做不開 返回 unworkable