initially:
adv. 最初，首先開頭Initially， the computer worked fine.
開始時電腦運轉良好。
The theory was initially approved.
這一理論起初受到了支援。
Initially， people were aginst the law.
最初，人們都不同意這個法律條規。
The damage was far more serious than initiallybelieved.
損失比最初認爲的要嚴重得多。
firstly:
adv. 首先（主要用於列舉條目、論點時）第一Firstly， we want to achieve the best quality in this industry.
第一，我們要做到這個行業的最好質量。
I should firstly complete the task assigned by the superior.
我應該首先完成上級交代的任務。
