英语六级高频词汇复习笔记(26)
               日期:2011-07-12
               
			   
                   8. rigorous a. 严格的
           
            
    		            
                        
        The planes have to undergo rigorous safety checks.
这些飞机得接受非常严格的安全检查。
He makes a rigorous study of the plant in the area.