短語(yǔ)詞組用作名詞 (n.)介詞+～be at a minimum 処於最小限度at the minimum of cost 以最低的成本keep ...to a minimum 把…保持在最低限度reduce 〔bring〕...to a minimum 把…減少到最小〔低〕限度短語(yǔ) 返回 minimums