这张照片是NASA 2007年拍摄的，其中最明亮的星体便是Gliese 581，它距地球20光年，是太阳系最近的邻居之一。
Gliese 581, the brightest object in this Nasa image from 2007, is only 20 light years from Earth and is one of our nearest neighbours.
令人惊异的结果是当划距增加，摄氧量、心率和疲劳感也都显著增加了。
The fascinating result was that as the stroke lengthened, oxygen uptake, heart rate and perceived exertion all rose significantly.
你可以在照相机上安装可变距镜头或摄远镜头。
微摄镜头：一些相机制造商用这个名词描述它的微距镜头。
Microlens: A term used by some manufacturers to describe their macro lenses.
通过研究热轧圆钢运动时的物距变化对摄象法在线检测的影响，提出了建立热轧圆钢运动中的相对监测系统。
The influence of the object distance changes in the on-line measurement and measuring errors of the instrument have been studied.
通过研究热轧圆钢运动时的物距变化对摄象法在线检测的影响，提出了建立热轧圆钢运动中的相对监测系统。
The influence of the object distance changes in the on-line measurement and measuring errors of the instrument have been studied.
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