Lake sediment nevertheless constitutes an important "carbon sink," serving to store - sometimes for a very long time - a significant portion of the carbon-containing material that does not decompose.
然而湖泊沉积物又是一个重要的“碳汇”，用来存储-有时存储很长的时间-相当大部分不能分解的含碳物质。
2
In the aftermath of a massive bloom, dead phytoplankton sink to the ocean or lake floor.
在一场大规模水华后，死亡的浮游植物沉入海底或湖底。
3
The original city was built on the site of a former lake-the Aztecs built the city on a series of aquatic platforms, but when the Spanish conquered the city, they drained the lake, causing it to sink.