The director for Unnatural Selection mentioned they had cue cards for her. So she didn't have to learn all that technobabble.
If fairness though, there was a recentish interview with Alexander Siddig (annoyingly I can't remember where now, but it was most likely as part of the PR fluff for Primeval
) where he talked and his fellow DS9's using cue cards at different times as well. Apparently the only stigma was in using them too much, so he had to be careful to "Save up" his allowance for the really nasty technobabble.