- non-productive thinning
- 非生产性: unproductive; nonproductive
- 疏: dredge neglect
- 伐: fell; chop; cut down
- 非生产性: unproductive; nonproductive 非生产性工程 nonproductive construction; 削减非生产性开支 reduce [cut down] nonproductive expenditure; 非生产性人员 nonproductive personnel
- 非生产性的: nonoperating; nonproductive
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