先看一个例句：

A light-stimulated burst of net CO2 uptake immediately after the start of the light period was followed by a reduction of net CO2 uptake or net carbon dioxide evolution during several hours of the light period.

请问其中net carbon dioxide evolution是什么意思？evolution是“演变;进化;发展”吗？

这里的evolution是“（如热、气、蒸汽等的）释放或排出行为”（the act of throwing off, as heat, gas, vapour, etc）的意思。

这个意思很少见。