synthetic cross variety

例句：

1. 1. The breedersare working on developing a new synthetic crossvariety for the next generation.
   育种者正在努力开发下一代的一种新型合成杂交品种。
2. 2.This synthetic cross variety has been proven tobe more resistant to pests than itstraditional counterparts.
   这种合成杂交品种已被证明比其传统品种更抗病虫害。
3. 3. The synthetic cross variety is expected torevolutionize agriculture by increasing crop yields andreducing environmental impact.
   这种合成杂交品种预计将通过提高作物产量和减少环境影响来革新农业。