Has Now Developed A 现已研制出
Bill Hunt,a professor of Biology and Agricultural Engineering at North Carolina State University, has developed an easy-to-use computer model to predict how landscape impacts water pollution.
VOA: standard.2010.08.04
It has a very well-developed muscular tissue and its function is to contract and relax, contract and relax.
该肌肉组织非常发达,用来使心脏收缩,放松,收缩,放松
One that was developed a number of years ago but has been perfected and refined in recent years with very, very good research.
该概念很多年前就已经提出了,但在近年通过高水平的研究才被改进完善
应用推荐