科研人员根据已有数据，通过哈勃太空望远镜更近距离的观察这个黑洞。发现M87星系的特大质量黑洞已经移出了中心位置。
Researchers used data from the Hubble Space Telescope to look more closely at the black hole, and found that the supermassive black hole in the M87 galaxy is, in fact, displaced from the center.
用武器瞄准时的缩放现在也有不同，只是获得一个近距离视角再通过红点或者准星瞄准的方式被取代，而是你通过瞄准镜观察，并移动一个红色目标圈。
Zooming in with your weapon is different now too. Instead of just getting a closer view and aiming via a red dot or crosshair, now you're looking through a scope and moving a red targeting circle.
目的：应用改变近用老视镜的光学中心所产生的三棱镜效应，消除老视患者近距离阅读和工作的肌性视疲劳。
AIM: To evaluate the therapeutic effects of using prism effect in the correction of muscular asthenopia by changing optical center of presbyopic glasses.
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