Definition
Describes someone who is expected to die soon; having little time left to live.
命在旦夕
Ever since the doctor told him about his condition, he knew he was not long for this world.
自從醫生告訴他他的病情後，他知道他在世時間不多了。
She looked so frail, as if she were not long for this world.
她看起來非常虛弱，彷彿在世時間不多了。
The old tree is so diseased that it seems not long for this world.
那棵老樹病得很嚴重，似乎活不了多久了。