improved variety是什么意思 improved variety怎么读
improved variety的英文翻译是什么意思，词典释义与在线翻译
improved variety的用法和样例
- Improved wheats will be introduced on a wide scale this year.
今年将大范围的推广小麦的改良品种。 - They are improved strains bred by the Agricultural College.
它们是农学院培育出的改良品种。
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