at last多指经主观努力，克服各种困难后才终于达到目的。 at length强调经历一段长时间后终于完成，侧重在时间部分。 eventually侧重于动作或行为的结果。 finally常与at last换用，都可用于对往事的描述，但finally不带彩，指一系列事的最后结局。 in the end与at last同义，但in the end不仅可指“过去”还可表对“未来”的预计。 lastly指连续顺序的最后，通常用在列举事的场合。
1.Lastly, I must say I owe all the achievements to the encouragement and help from my collegues and friends.
最后,我必须说我的这些成就都应归功于我的同事和朋友们的鼓励和帮助。
2.Lastly, by using the FORTRAN language, the thesis compiles the program of the stiffness optimization process of short-leg shear wall-corewall structure.
最后运用FORTRAN语言编制了短肢剪力墙-核心筒结构剪力墙刚度优化程序。
3.Lastly, all the editors at KoB and AoB will monitor this contest, as they do all contests, to assure our standards are met and exceeded.
最后，所有的编辑和副嗅球矮将监测这次比赛，因为他们所有的比赛，以保证我们的标准是达到并超过。
4.Lastly, I think the campus should be regular, simpatico, it is different with society. and the student should study at the natural, full of youthful spirit, active circumstance!
彩，指一系列事
对“未来”的预计。
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