prepaid fee的用法和樣例：
例句
- Prepaid billing and affordable handsets on their own are not enough to ensure a rapid adoption of mobile phones, however.
然而，預付費系統以及支付得起的手機本身并并不足以確保移動(dòng)電話(huà)的快速普及。 - The insurance agent seeking to expand marketing opportunities is well advised to consider prepaid legal services.
建議正在尋找市場(chǎng)擴展的保險代理關(guān)注預付費法律服務(wù)。
