laggar
美 ['læɡə]
英 ['læɡə] 
英汉解释
例句
However, the academic research is more laggar than practice of engineering. It is necessary to ameliorate the method of test.
但理论研究远落后于工程实践,还需要不断地改进试验方法与手段。
Some thoughts about the education and management of the laggar students
后进生教育与管理的几点思考