last but not least，最后不能不提;最后但同样重要的是;
例句，
Last but not least, I'd like to thank all the catering staff.
最后但同样重要的是，我要感谢所有的餐饮工作人员。
它的同义词：
at length，终于;最后;充分地; 详尽地
At length， my father went into the house.
我父亲最后还是进了屋。
considering in another dimension, to give it a last but not least thought, to sum up but not end up, etc.
