短語(yǔ)詞組用作動(dòng)詞 (v.)～+名詞necessitate a great food 需要大量的食物necessitate a great supply 需要大量的供應(yīng)necessitate an operation 需要手術(shù)necessitate punishment 需要給以懲罰短語(yǔ) 返回 necessitates