短語詞組短語practical water level 實際水位practical qualification level 實際的資質等級practical operation level 實際操作水平practical hearing level 釋義實用聽力級practical quantitation level 實際的定量水平At The Practical Level 從實際層麪來看practical water -level 實際水位At A Practical Level 在一個實用水平137Cs source practical level 銫 返回 practical level