dawn /dɔ:n/ I. n. 1.[c]&[u]黎明,天亮: at dawn 黎明时; from dawn till dusk 从早到晚; at the break of dawn 破晓时刻 The darkest hour is before the dawn.[谚]黎明前是最黑暗的时刻。Dawn is breaking. 天刚破晓。2.开端,开始:at the dawn of the Atomic Age 在原子时代的开端 It marks the dawn of a new era.它标志着一个新时代的开端。‖II.vi. 1.破晓,(天)亮起来了:The day was dawning. 天快亮了。2.开始出现,渐露端倪,渐渐明白:At last it dawned on us. 我们终于明白了。A new era of progress is dawning in Asia. 一个进步的新时代正在亚洲大地出现。dawn on终于明白:At last it dawned on us. 我们终于明白了。