我将专攻地理学.I shall confine myself to the subject of geography.森林学和地理学有关.Forestry appertains to geography.那时正是地理学真正开始发生改变、许多新观念兴起的时候。It was just when geography was really beginning to change and lots of new ideas were coming...
希尔达姨妈和杰克姨父对他们宠爱有加。Auntie Hilda and Uncle Jack couldn't fuss over them enough.她和希尔达道别时流露出了明显的爱意。She said goodbye to Hilda with a convincing show of affection.希尔达发出一声尖叫。Hilda let out a scream....
The results indicated that natural and recombinant Aer toxins had similar antigenicity.试验说明:原核表达的重组Aer毒素 和天然Aer毒素 诱导獭兔产生的血清IgG抗体可以互相识别重组Aer毒素 和天然Aer毒素,重组Aer毒素 和天然Aer毒素 有相似的抗原性.It had no toxicity, irritation, and antigeni...