This is called interferometry, and is not a new idea.

这种方法被称为干充其分析法，它不是什么新想法。

And this time, LIGO also has the support of KAGRA,   a new interferometry observatory in Hida, Japan.

这次，LIGO 还得到了位于日本飞驒市的新干天文台 KAGRA 的支持。

The EHT's trick is a technique called very long baseline array interferometry (VLBI).

EHT 的技巧是种称为超长基线阵列干法 (VLBI) 的技。

We're interfering waves together, that's what interferometry means and so if those waves move back and forth a little bit when you interfere them they destructively interfere and you lose your signal.

我们正在起干扰波，这就是干法的意思，所以如果这些波在你干扰它们时来回移动点点，它们就会破坏性地干扰，你就会失去信号。

The EHT gets around this by linking together 15-20 telescopes. It uses a technique known as interferometry, in which astronomers on different continents simultaneously observe the same object, then combine the collected data on a supercomputer.

而 EHT 通过连接 15-20 个望远镜来巧妙地应对这问题。它使用了种被称为" 干" 的技，用这种技，在不同大陆的天文学家可以同时观同目标，然后将收集到的数据组合在台超级计算机上。