Over geologic time, they have ebbed and flowed with natural climate cycles.

在整个地质时期，它们随着自然地气候循环减小或涨大。

youdao

Although rare on human timescales, over geologic time earthquakes are frequent in the area.

影响地质时期的大地震虽然在人类的历史中非常罕见，但该地区地震活动自古以来就非常频繁。

youdao

Over geologic time, increased pressure from the overlying rocks changed the layers of organic material into coal.

经历了数代地质期，上层岩石逐渐增大的压力改变了无机矿物层的构成，最终形成了煤。

youdao

Neither is significant compared to the known global variations in temperature over geologic time, though any cooling still contradicts the AGW hypothesis.

FORBES: Peter Gleick Sets Back the Climate Debate

Even if it does, it is not important because the observed warming, even the highest temperatures that can be found in the data, is well within the range of natural changes that have occurred over eons of geologic time.

FORBES: Peter Gleick Sets Back the Climate Debate

Geologic history shows that over a LONG time period that sea level changes by about 65 feet (20 m) for each degree C of change in the ocean.

FORBES: Why Most Forbes Readers Know More About Global Warming than Most Climate Scientists