That is, they're the breakdown product of other rocks.

也就是说，它们是其他岩石的分解产物。

Since uric acid is a breakdown product of purines, a very common reason for high levels of uric acid is consuming lots of purines.

由于尿酸是嘌呤的分解产物，故高尿酸是大量摄入嘌呤的结果。

So I think it's more likely that that's a sulfur breakdown product just because I think that the pyrite takes longer to form.

所以我认为这更有可能是硫分解产物，因为我认为黄铁矿需要更长的时间才能形成。

A hundred million new cells are born every minute, and a hundred million old cells are destroyed. It's actually the breakdown products of these red blood cells that turn your bruises and urine yellow.

每分钟有上亿的新细胞诞生，同时也有上亿的细胞死亡。你身上的挫伤和尿液的黄色就是来自这些红血 球细胞的分解产物。

One looks at levels of serotonin and its breakdown products in blood and spinal-cord fluid, taking these as proxies for the amount in the brain, which it is unsafe to measure directly in living people.

人们观察血液和脊髓液中血清素及其分解产物的水平，将它们作为大脑中含量的代表，直接在活人身上测量是不安全的。