本页所展示的图片就是这两个星系在几亿年前相互作用的情景，下方的星系ugc 1813正伸手去勾上方的UGC 1810星系外露的胳膊。

What you're seeing on this page is an interaction that occurred a few hundred million years ago, as the lower galaxy (UGC 1813) dived through the outside arms of the upper one (UGC 1810).

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他伸手拿到了有灰色报纸图片的文件。

He had reached for the file of grey newspaper photographs.

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