I was listening to a pop song by the Chinese singer 那英. The song is called 天生不完美. I was curious to read the lyrics and so checked them at the following address: https://mojim.com/twy100287x13x7.htm
The lyrics of the song show the string of characters in the question title: 阿ㄘㄟˊ
那英 sings these lyrics although apart from the first character I'm unsure as to what sounds she's actually singing or even if the characters each represent a syllable.
I searched the characters online and can see that this question has also been asked by Mandarin speakers on other Q&A sites but because my reading ability is not advanced enough I don't understand the answers. An example site: https://zhidao.baidu.com/question/1510115037626460660.html
So I was hoping somebody could enlighten me as to whether this phrase is Chinese (from a minority language or written in an alternative script) or if it's imported from another language (Japanese?) and what it actually means.
The theme of the song it appears in seems to be: 'you're searching for perfection but it's human nature to be imperfect'.
Thanks for any help!