tilt at windmills
成語所屬單字tilt
tilt at windmills — 慣用語
1. to waste your energy fighting opponents or problems that are not real or cannot
1.慣用語
釋義
攻擊假想敵；徒勞無功的抗爭
to waste your energy fighting opponents or problems that are not real or cannot be defeated (from the novel Don Quixote, in which the hero attacks windmills, thinking they are giants)
例句
Christopher worried that his campaign against the big company was just tilting at windmills.
Instead of tilting at windmills, the activist focused on smaller, winnable local issues.