系统发生

Combining the physiological states and the anatomical parameters, the paper takes the bronchia artery infusion of lung cancer as the prototype to carry out the study.

论文主要工作：阐明了本论文研究的生物医学背景，研究对象和目的、意义，分析了国内外相关研究的发展现状。

I began to like her since July.

我开始喜欢她的7月以来。