economic appraisal的用法和樣例：
例句
- Combination evaluation method, a new multi-index economic evaluating method for inv estment, is presented.
給出了一種投資方案多準則經濟評價的新方法，即組合評價法。 - To reach this target, planning and economic evaluation on reclamation engineering must be carried out to formulate a feasible scheme.
為達到這一目標，必須對圍海工程進行規劃和經濟評價，制定出合理可行的決策方案。
