1·Now, how do we get this unit vector?
那我们怎么得到这单位矢量呢？
2·Well, it might be good to think of, maybe, the position vector, and maybe its variation.
这还是比较容易想到的，假如这是位置矢量，这是它的变化量。
3·This is that vector.
就是这个矢量。
4·You can also download complete sets or submit vector files of your own.
你也可以下载完整的套件或发布你自己的矢量文件。
5·Unlike most of the vector formats mentioned above, SVG is free of any patent or copyright restrictions, and its specification is fully documented.
与上述多数矢量格式不同，SVG是完全免费的，没有任何版权或专利权限制，而且其规范完全有文档记录。
1·Workforce, information and financing; essential vaccines, medicines and technologies; and basic survival needs e.g. sanitation, nutrition, potable water, vector control and tobacco control.
世卫组织卫生服务支柱(如劳动力、信息和资金)；基本疫苗、药品和技术；以及基本生存需求(如卫生、营养、饮用水、病媒控制和烟草控制)。
2·Much of the success to date in controlling malaria is due to vector control.
迄今疟疾控制方面取得的许多成就是因为开展了病媒控制。
3·A complex but non-significant association was found between water supply and pupal counts, and lack of waste disposal services was associated with higher vector abundance in only one site.
我们发现，水的供应和蛹的数量之间存在复杂但非重大的关联，没有水处理设施只在一个地点与较高的病媒丰度存在关联。
4·All of the important vector species bite at night.
所有这些主要病媒按蚊均在夜间叮咬。
5·The entomologist is working with the Ministry and WHO to conduct larval and mosquito surveys to develop a strategy for vector control.
昆虫学家正在与卫生部和世界卫生组织共同工作，对幼虫和蚊子进行调查以便制定病媒控制战略。