practical use实际运用／用途practicaladj.明智的；实际的；实用的；事实上的n.实践考试practical effectiveness实效性practical training base实训基地practicality experiment实物实验practical biotechnology实用生物技术practical sampling unit实际采样器practical point of view实际的观点practical teaching step实践性环节practical undergraduate应用型本科practical and realistic实事求是Practical signifieanees现实意义