她说得很少，但她的表情说明了一切。

She said very little, but her face ___spoke ___volumes.

研究结果充分证明了新疗法的有效性。

The research findings ___speak ___volumes about the effectiveness of the new treatment.

政府缺乏回应，这清楚地表明了他们的优先事项。

The government's lack of response ___speaks ___volumes about their priorities.