Definition
To be extremely ill and close to dying.
味在旦壬
He contracted severe pneumonia and was at death's door at one point.
他得了严重的肺炎，一度濒临死亡。
After months of chemotherapy, she looked like she was at death's door.
经过几个月的化疗后，她看起来像是濒临死亡。
After the accident, he was at death's door, and the doctors weren't sure if they could save him.
事故发生后，他濒临死亡，医生不确定是否能救活他。