Petrifaction may also involve a simultaneous exchange of the original substance of a dead plant or animal with mineral matter of a different composition.
石化还可能同时涉及将死亡的动植物的原有物质与不同成分的矿物质进行交换的作用。
2
It's always a real pleasure to show our plant to our friends in the same industry and exchange ideas with them.
能够把我们工厂展示给同行的朋友并且与她们交换意见，总是一件非常愉快的事。
3
Like a snorkel, the elongated stem allows the plant to exchange gases with the atmosphere while most of it is submerged.