单词	数量上的增减
释义	数量上的增减 increase or decrease in quantity
随便看	principal leaf principal lecturer principal left ideal principal legal adviser to the government Principal Legal Advisor principal legal system principal length principal level principal leveling principal level line principal lieutenant principal line principal linear optimization principal line method principal line of direction principal line of photograph principal line of picture principal line of the palmprint principal line of the picture Principal Lines principal lines of direction principal linguistic institutes of China principal linguistic periodicals of China principal linguistic societies of China principal link