be off the beans：不走正道，误入歧途
e.g. Carl was way off the beans though we advised him again and again.
虽然我们一再劝告卡尔，他还是误入歧途。
e.g. Many young girls living alone in London are off the beans for lack of parental control.
许多在伦敦独居的姑娘由于没有父母的管教则误入歧途。
