was trebling
Past progressiveconjugation oftreble.There are other translations for this conjugation.

treble

At end April, just after the evaluation was released, the Bank said it was trebling support to the health sector this year, planning to spend $3.1 billion.
A finales de abril de 2009, justo después de la publicación de la evaluación, el Banco Mundial dijo que estaba triplicando su apoyo al sector de la salud, y que planeaba gastar $3.100 millones.
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