问道于盲: ask the blind the way; ask the way from a blind man -- seek advice from one who can offer none; ask advice from an ignorant person; blind leading the blind
不宜: not suitable; inadvisable; inappropriate 短语和例子不宜饮用的水 water unsuited for drinking; 这一点不宜过分强调。 it's inadvisable to overemphasize this point. 这种土壤不宜种花生。 this kind of soil is not suitable for
