每日商務英語 第30期:一文不值
not worth a hill of beans 一文不值
Worthless.
Since I know nothing about his field, I always warn my old friend that any advice I give him about business is probably not worth a hill of beans.
由於我對老友的專業領域一無所知,我總是提醒他,我提出的有關事業的建議很可能完全沒有價值。