So we know that we had continental crust made of granites, and we know that we had liquid water oceans at 4.37 billion years, which again, without those rocks, we would have no idea.

因此，我们知早期地球上在大量液态水， 并且从锆石中的钛浓度可知， 这些锆石在花岗岩中相对低温下结晶的。这表明我们拥有由花岗岩构成的大陆地壳， 并且在43.7亿年在液态水海洋，若非这些岩石的证据， 我们对此将一无所知。

So what that tells us is that we had large bodies of liquid water on the early Earth, and we know from the titanium concentrations that the zircons crystallized that relatively low temperatures in granite.

这告诉我们， 早期地球上在着大量的液态水体，并且通过锆石中钛的浓度， 我们知这些锆石在花岗岩中相对低温条件下结晶的。