in the last 10mins 和 in the past 10mins 和 within 10mins 和 in 10mins 的差別在哪裡？如果不好說明，請提供一些例句。

"in the past 10mins" = during the 10 minutes before RIGHT NOW
Ex:
-I finished my homework in the past 10 mins
-The mail arrived in the past 10 mins

"in the last 10mins" = during the final 10 minutes. It can be the same as "past 10 mins", but also can be used for things that finished a long time ago
Ex:
-I finished my homework in the last 10 mins (same as past 10 mins)
-The mail arrived in the last 10 mins (same as past 10 mins)
-I finished the exam yesterday in the last 10 minutes
-He entered 1st place in the last 10 minutes of the race
-I fell asleep in the last 10 minutes of the movie

"Within 10mins" = before 10 minutes from now, or something took 10 minutes to happen
Ex:
-I need to do my homework within 10 minutes (finish doing homework)
-I need to get to work within 10 minutes (arrive at work)
-I finished my homework within 10 minutes
-She wrote the essay within 10 minutes

"In 10 minutes" = exactly 10 minutes from now, or something took 10 minutes to happen
Ex:
-I need to do my homework in 10 minutes (start doing homework)
-I need to go to work in 10 minutes (leave home to go to work)
-I finished my homework in 10 minutes
-She wrote the essay in 10 minutes