Hazırlık eksikliğinden sınavda başarısız oldu.
- He failed in the examination for lack of preparation.
O, çaba eksikliği nedeniyle başarısız oldu.
- He failed due to lack of effort.
... And that lack of enthusiasm is conveyed to the students. ...
... it's not for lack of trying and we're going to get it done in a second term. But, ...