回答

・upbringing
・background

「成長背景」可以用英語 upbringing 或 background 來表達。

I've known him for a long time, but come to think of it, I know nothing about his upbringing.
（我們已經相處很長一段時間了，但仔細一想，我對他的成長背景一無所知。）

In order to find out the truth behind the incident, I investigated the background of the criminal.
（為了尋找事件的真相，我調查了嫌疑犯的成長背景。）

很高興幫到你。

有幫助｜0