hot air片語KK [hɑt ɛr] /hɑt ɛɹ/發音片語1空話、大話、吹牛貶義His promises about reform turned out to be just hot air.他關於改革的承諾到頭來只是一堆空話。2熱空氣、熱氣Hot air rises, so the upstairs rooms are always warmer.熱空氣會上升，所以樓上的房間總是比較暖。形容詞1熱氣的、熱空氣的We took a hot-air balloon ride over the valley at sunrise.日出時我們乘熱氣球飛越山谷。