Securing the Tokyo contract was a decisive moment for our small export company.

拿下東京的合約，是我們這家小型出口公司的關鍵時刻。

The final interview round proved decisive in choosing the new marketing director.

最後一輪面試在挑選新任行銷總監時起了決定性作用。

Fast delivery was the decisive factor in winning back several unhappy customers.

快速出貨是贏回幾位不滿意客戶的關鍵因素。