碰钉子: receive serious rebuff; be snubbed; bump one's head against a nail; have one's offer [proposal] turned down; meet rejection; meet with a flat refusal; meet with a rebuff; meet setbacks; ge
自碰钉子: knock [run] one's head against a brick [a stone; a wall; a post]
不老实的人非碰钉子不可: a dishonest person is bound to meet with setbacks sooner or later
他没想到在那个公司会碰钉子: he didn’t expect to get the cheese in that company
