英语多种表达
Firstly: previously, beforehand, foremost, initially, originally, formerly, principally, mainly, essentially, basically, generally, commonly, universally, on the whole, fundamentally, to begin with, to start with, first of all, at the outset…
Firstly: previously, beforehand, foremost, initially, originally, formerly, principally, mainly, essentially, basically, generally, commonly, universally, on the whole, fundamentally, to begin with, to start with, first of all, at the outset…

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