a failed experiment

Translations
неудавшийся эксперимент
The failed experiment taught them valuable lessons.
Неудавшийся эксперимент преподал им ценные уроки.
Definitions
An attempt to test a hypothesis or achieve a desired outcome that does not succeed or produce the expected results.
Words
a

article or possessive pronoun
один
failed

adjective
неудачный
experiment

noun
эксперимент