Determining where a distant object lies in space takes a bit of work, because the universe lacks clear distance markers.

由于宇宙中缺少明显的距离标识，在空间中确定一个遥远的物体的位置需要大量的工作。

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Gravitational lensing works like this: When a large nearby object like a galaxy blocks a distant object, such as another galaxy, the light can detour around the blockage.

引力透镜的工作原理如下：较近的大型物体如星系挡住一个远处的物体，如另一个星系时，光可以从阻挡物的旁边绕过来。

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There might be a distant object in a more stable, more circular orbit that has gone unnoticed so far.

也许有这么一个遥远的天体具有一个更加稳定的更加圆润的轨道而至今未被我们发现。

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The object moved slowly in the sky like a distant planet.

VOA: special.2010.07.11

The near object's gravity bends the light rays from the more distant object and magnifies them like a lens.

BBC: Artist's concept of a distant world (BBC)

Make work legal, while making citizenship a distant object for those who want it.

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Obama's targeted tax cuts will make the worthy goal of tax simplification an even more distant object.

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