晚饭过后，夕阳斜照，杨年迈的双老喜欢把双扇木门打开，好让新鲜的空气稀释屋里的阴郁。
After dinner Mr.Yang's aged parents like to leave their double wooden door open for air.
综合分析表明，转双抗虫基因741杨对节肢动物群落垂直结构具有一定的正面效应。
So, transgenic insect-resistance hybrid poplar 741 showed positive effect on vertical structure of arthropod community.
应用稀释平皿分离法对转双价抗虫基因741杨的根际土壤微生物进行了分离研究。
The isolation of the rhizosphere soil microorganism of transgenic 741 poplar containing two insect-resistant genes was studied with the gradient dilute method.
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