位置被叫做视极移曲线 apparent polar wander paths
如果是在同一个位置，按照国际惯例，它们被叫做同位素。
If they are found on the same place, it is iso-topos. These are called isotopes.
地球处于来自超大质量黑洞产生发射物的“枪口”方向，但是这些被叫做耀变体的天体处于一个对于我们来说非常安全的距离位置上，成万上亿光年。
From the Earth we look down the barrel of jets from supermassive black holes, however these so-called "blazars" are at much safer distances of millions or billions of light years.
当排在队伍前面的人被叫到号离开时，这款“自动行驶”座椅的新系统会马上检测到并自动把每个人的座椅向前移动一个位置。
The new system of 'self-driving' chairs is designed to detect when someone at the front of the queue is summoned, and automatically move everyone else one step forward in line.
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