- improved well
- 改善: improve; ameliorate; perfect ...
- 井: well
- 完善井: completely penetrating well; improved well; well
- 改善: improve; ameliorate; perfect; better; mend; modify; improvement; perfection; melioration 改善人民生活 make the people's life better; 改善工作条件 improve the working conditions; 改善经济环境 improve the economic environment; 两国关系已有所改善。 the relations between the two countries have shown some improvement
- 不完善井: imperfect well
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