意义: sense, meaning, significance, importance...
科目: academic subject, field of study...
少: few, less, to lack, to be missing, to stop (doing sth), seldom...
上市: to hit the market (of a new product), to float (a company on the stock market)...
孙女: son's daughter, granddaughter...
走弯路: to take an indirect route, to waste one's time by using an inappropriate method...
用法: usage...
价值: value, worth, values (ethical, cultural etc)...
改良: to improve (sth), to reform (a system)...
回归: to return to, to retreat, regression (statistics)...
