Bind environment variables into this object's scope.

def bind(self, *args, **kw):
    """
      Bind environment variables into this object's scope.
    """
    new_self = self.copy()
    new_scopes = Object.translate_to_scopes(*args, **kw)
    new_self._scopes = tuple(reversed(new_scopes)) + new_self._scopes
    return new_self