The research on "missing sink" is main content in the global carbon cycle and global climate change.

“未知汇”的研究是全球碳循环及全球气候变化研究的主要内容之一。

youdao

The apartment is small. A door is missing under the kitchen sink and there is a hole in the wall near the window.

VOA: standard.2010.02.23

For those interested, CleanBeta will be posting more about the missing carbon sink later this week .

FORBES: The 'Glaring Hole' in Climate Science