韓国語がわかりませんが、そちらは日本語が一番お上達らしいですので日本語で回答します 还是 は 基本的に「それでも」と同じと考えられる 簡単な例を見ましょう 虽然知道去日本留学很辛苦，但我还是选择了日本 日本に留学するのは辛いと分かるが、それでも私は日本を選んだ っていう感じ

It is roughly "still" in this context. If you want to be a bit more liberal with the translation, you could understand it as being kind of like "nevertheless" or "nonetheless". It just indicates a bit of a contrast. Have the time I wouldn't even translate it: "She never thought that she would work as a recruiter, but she ended up agreeing to do it right away." "She had never thought about working as a recruiter, but she took up the opportunity very quickly." "Although she didn't plan to work in HR, she accepted the offer immediately."

还是在这里是虚词用法，也就是没有什么具体的含义，这里只表示一种转折关系，一种逻辑上的关系。 理论上说，一个人从来没有想过要做什么，那么她一般来说就不会去做这个工作，然而她同意去做了，所以这里用了“还是”，表示她虽然没想过去做“但是最终的结果是她同意做了”，因此表示的是一种转折。 我的英语不好，但是我个人觉得英语中没有与汉语的这些词完全对应的词。英语是无法直接它们的。最好用汉语来学习这些词的用法。

她没想过自己会做招聘工作, She never thought she would work in recruiting, 但她还是马上应允了. but nevertheless(还是） she immediately consented.

それとも