claims, promises or statements that sound impressive but have no real meaning or truth 夸夸其谈;大话;空话 He talks a lot of hot air. 他说了很多空话。 Don’t worry about what they’re saying—it’s all hot air. 别担心他们在说什么——都是空话。 The whole debate was just so much hot air. 整个辩论都是空话。