improvement

名词复数：improvements

词形变化：

动词过去式: improved | 动词过去分词: improved | 动词现在分词: improving | 动词第三人称单数: improves |

同义词：

correction | development | recovery | refinement | advance | amendment | step-up | upgrade | enhancement | culture | advancement | progress | expansion | headway | promotion | recuperation | enrichment | upturn | convalescence | melioration | betterment |

反义词：

deterioration | decline |

词义辨析：

同义参见:

development

headway

culture

correction

refinement

recovery

promotion

enrichment

反义:

n.改良(物); 进步; 增进

deterioration