ugly duckling

US /ˈʌɡ.li ˈdʌk.lɪŋ/
UK /ˈʌɡ.li ˈdʌk.lɪŋ/
"ugly duckling" picture
1.

醜小鴨

a person or thing that is initially unattractive or unpromising but eventually becomes beautiful or successful

:
She was an ugly duckling in high school, but she grew up to be a stunning model.
她高中時是個醜小鴨,但長大後成了一位驚豔的模特。
The old building was considered an ugly duckling, but after renovation, it became the most beautiful one in the city.
那座舊建築曾被認為是醜小鴨,但翻新後,它成為了城市中最美麗的建築。