在過去幾十年內

在過去 zaiˋ guoˋ quˋ

(In the past) In the past

過去 guoˋ quˋ

(Am over, Are over, End, Former, Formerly, Go Over, Goes over, Going over, In the past, Is over, Old, Pass, Pass away, Pass by, Passed, To be, To end, To go, To pass, Was over, Went over, Were over) Formerly, In the past, Former, Old, To pass, Pass, Pass by, Passed, To go over, Go over, Goes over, Going over, Went over, To go over there, Go over there, Goes over there, Going over there, Went over there, To end, End , Ends , Ending , Ended , To be over, Am over, Are over, Is over, Was over, Were over, To pass away, Pass away, Passes away, Passing away, Passed away

過去幾十年 guoˋ quˋ jiˇ shiˊ nianˊ

(Past) Past few decades

幾十 jiˇ shiˊ

(Dozens) Dozens

幾十年 jiˇ shiˊ nianˊ

(few decades) A few decades

十年 shiˊ nianˊ

(Ten Years) Ten years, 10 years

內 neiˋ

Within, Interior, Inner, Internal, Inside, Domestic