例句與造句

1. In this research project , the agrobacterium tumefaciens mediated transformation of badh gene of tetraploid black locust has been studied , for the purpose of improving resistance to soline - alkali and drought of tetraploid black locust ; of playing more important role in developing of waste lands , ameliorating of soline - alkali soil , and greening and beautifying of surface - mined lands , mine waste dumps , slopes of roads and railroads where restoration of vegetative cover has proven difficult ; of fully making benefits of its ability to fix atmospheric nitrogen in the soil
   為了進(jìn)一步提高四倍體刺槐的耐鹽性和抗旱性，進(jìn)一步擴大其適宜種植的生態(tài)范圍，充分發(fā)揮其固氮、改良土壤的特性，在我國的城鎮(zhèn)綠化、荒山造林、鹽堿地改良以及采礦跡地、公路、鐵路邊坡等植物生長困難土地的植被恢復(fù)中發(fā)揮其優(yōu)勢，本實驗對四倍體刺槐進(jìn)行了農(nóng)桿菌介導(dǎo)的甜菜堿醛脫氫酶基因轉(zhuǎn)化的研究。
2. It's difficult to find fixing atmospheric nitrogen in a sentence. 用fixing atmospheric nitrogen造句挺難的