Tatiana Gerasimenkoadicionou o comentário 5 years ago
THE scientists?
ученые использовалилучшые методы
ученые использовали лучшие методы
Editadoscientists used the best methods (available)
Researchers have used the most efficient methods
THE scientists?
думаю, не обязательно
"Models change over time. Over the years, scientists developed models to explain the structure of the atom. Scientists used the model to make predictions about their experiments."
Ага!