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- 养殖对动物的饲养或植物的种植，尤指为了产生改良品种
The breeding of animals or growing of plants, especially to produce improved stock.
- 不悔改的未在精神上自新或改良的；不惭愧的
Not spiritually renewed or reformed; not repentant.
- 社会改良空想家幼稚的理想主义者，支持善心或博爱的事件的改革者
A naive idealist who supports philanthropic or humanitarian causes or reforms.
- 要不是这些实验，这部机器也许就不可能改良了。
If it had not been for these experiments, the improvement of the machine would have been impossible.
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