塑料原料颗粒本身就是柴油制造的副产品，在生产过程中分离出的任何物质也都会重新进入到生产循环系统中。
The plastic granulate itself is a by-product from diesel, and whatever is discarded in the manufacturing process gets recycled.
我们知道，这样的板块活动对生命形成来说必不可少，它不仅有助于产生复杂化学过程，而且促使物质循环，比如释放二氧化碳进入大气层，使得地球保持温暖。
Such activity is essential to life as we know it, because it helps enable complex chemistry and recycles substances like carbon dioxide into the atmosphere, which keeps Earth warm.
俯冲带和地球系统演化过程中的动力学及物质循环。
And dynamics and mass circulation in subduction zones and Earth system evolution.
应用推荐