s. producing no result or effect
a. 无用的, 琐细的, 不重要的
1. Trying to convince him was futile; he had already made up his mind.
试图说服他是徒劳的;他已经下定决心了。
2. It felt futile to argue about the small details when the main issue was ignored.
当主要问题被忽视时,争论小细节感觉是徒劳的。
3. She realized that waiting for a reply was futile, so she moved on.
她意识到等待回复是徒劳的,所以她继续前进。