YOU SAID:

their marriage was ruined by his lack of motivation

INTO JAPANESE

彼らの結婚は彼のやる気の欠如によって台無しにされた

BACK INTO ENGLISH

Their marriage was ruined by his lack of motivation

INTO JAPANESE

彼らの結婚は彼のやる気の欠如によって台無しにされた

BACK INTO ENGLISH

Their marriage was ruined by his lack of motivation