carbon stock

例句：

1. 1. The company's carbon stock has been declining steadily since the beginning of the year.
   自年初以来，该公司的碳库存一直在稳步下降。
2. 2.The government is working on a plan to increase carbon stocks in order to combat climate change.
   政府正在制定一项计划，以提高碳库存以应对气候变化。
3. 3. The carbon stock levels in the ocean have been rising due to increased industrial activity.
   由于工业活动增加，海洋中的碳库存水平一直在上升。