Expresses that one cannot afford to do something; 'can't keep on', 'unable to continue'.
Long explanation:
The ~ていられない grammar point is used to express a feeling of not being able to continue doing something or not being able to keep on with a certain state. It can be translated as 'can't keep on', 'unable to continue' or 'can't afford to' in English. The formation is the same for all verb types.