Значение идиомы last but not least

[last but not least] {adv. phr.} In the last place but not theleast important.

Billy will bring sandwiches, Alice will bringcake, Susan will bring cookies, John will bring potato chips, and lastbut not least, Sally will bring the lemonade.



Australia topic на английском.
Why is it progress different from other progresses.


Значение идиомы last but not least