estuvieron dudando
-they/you were doubting
Preterite progressive ellos/ellas/ustedes conjugation of dudar.

dudar

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Sin embargo, otras delegaciones estuvieron dudando ante la sugerencia de identificar al cambio climtico y la energa renovable como las cuestiones prioritarias en el segundo ciclo.
However, a number of delegations were baulking at the suggestion to identify climate change and renewable energy as priority issues under the second cycle.
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