Longitudinal studies are studies that observe patterns of behaviour or drug use over a length of time and link them to outcomes measured during or at the end of the period.

纵向研究即在一段时间内，观研究对象的行为模式及药物使用与HSV-2感染的关系。

Methods:Using a micro-highspeed visualization system to observe the microcirculatory states and the rheological behaviour of blood cells in the animal Vivo .

方法采用显微高速动态图像分析系统，观测动物体内仅两种血液微循环流态和血细胞流变行为。

For instance, it\\\'s interesting to observe how the ease of interaction in Digg drives the swarming behaviour of its users.

举个例子，如果你去观察Digg自己的用户在群游现象（swarming）中的那种交互作用是如何的轻松，你会觉得非常的有意思。

Professional sociologists and psychologists are sent out to observe the every day behaviour of Bank of America’s target customers.

为此，调查公司派出了专业的社会学家和心理学家，以观察美国银行目标储户的日常习惯。

Xinhua said that people observe the behaviour, speeches and dress style of their deputies.

新华社报道说，人们非常关注人大代表的举止，谈话和穿着风格。