无从

无从 [wú cóng]

1. ■ have no way (of doing sth.); not be in a position (to do sth.):

无从下手 have no way of doing it; not know how to start;

无从知道 be unable to find out;

不了解情况， 就无从解决这类问题。 If we do not know the facts, we are in no position to handle such matter.