This is the 17713th most frequent Russian word.
удивлены
"Uдивлены" means "surprised."
Here, 'удивлены' describes their reaction to the outcome of the experiment, showing surprise.
Они удивлены результатами эксперимента.
They are surprised by the results of the experiment.
In this sentence, 'удивлены' is used as the participle for expressing the state of being surprised due to an unexpected event.
Мы были удивлены его внезапным уходом.
We were surprised by his sudden departure.
In this sentence, 'удивлены' is used to describe her typical reaction when encountering old friends, denoting a recurring emotion.