A mere repetition of other people's research cannot be called true scientific research.
他人の研究を繰り返すだけでは本当の科学的研究とは言えない。
Don't repeat such a careless mistake.
そんな不注意な間違いを繰り返すな。
Repeating a mistake without recognizing it as one, is the biggest mistake of all.
過ちを過ちと認めずに過ちを繰り返すことが最大の過ちである。
Although I broke test tubes and played about with chemicals for fun, I did occasionally manage to obey the teacher's instructions as well; repeating experiments that others had long ago undertaken.
The emotion they gave me was exquisite, but I could not preserve it, nor could I indefinitely repeat it; the most beautiful things in the world finished by boring me.
Comparing American English and British English is like counting incompatible sets of floors of a building. That's why, when you try translating over and over again between the two, it's like climbing an endless set of floors. You might even reach the moon