改良品種 improved breed: 改良品種; 改良種improved variety: 改良品種; 經(jīng)過改良的種子partially improved breed: 部分改良品種breeding improved variety: 選育良種improved: 改進(jìn)的; 改良的; 經(jīng)過整治的下載手機(jī)詞典可隨時隨地查詞查翻譯