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torrentially; swiftly flowing (water, esp. river); voluminously flowing
(speak) eloquently; fluently; spout forth (a torrent of speech)
flood of the times (moving strongly in one direction); current of the times
とうとう試験に合格しました。
I finally passed the exam.
とうとう雨が降り始めました。
It finally started raining.
とうとう目標を達成できました。
I was finally able to achieve my goal.