I woke up just before dawn.

我正好在拂晓前醒来。

《牛津词典》

I aim to be at the lake before dawn, so let's get moving.

我打算天亮之前到湖边，所以我们马上就动身吧。

《柯林斯英汉双解大词典》

A group of 80 attackers launched an all-out assault just before dawn.

有80名攻击者的一个小队在黎明前发起了一次全面进攻。

《柯林斯英汉双解大词典》

The violence began before dawn, with gunmen in speeding cars killing soldiers and police at checkpoints across Baghdad.

VOA: standard.2010.05.10

First,they don't meet in the daytime; they meet either early before light,at dawn, or after dark,at night.

首先，他们不在白天聚会;,要么在天亮前的黎明，要么在天黑后的夜晚。

耶鲁公开课 - 新约课程节选

This is why he's continually placing the imaginative origin of the poem back to the very dawn of time, perhaps even back before if you can imagine such a time -- before the very dawn of time.

这就是为什么弥尔顿总是试图把想象中的这首诗的起源,推至时间开始的时候，甚至更早,-如果你们能想象这样一个时间--在时间开始之前。

耶鲁公开课 - 弥尔顿课程节选

The latest incident happened after a Taliban attack on a local police post before dawn.

BBC: Nato air strike in Ghazni 'kills Afghanistan police'

The coast guard finally reached the Bozzano family on their rooftop an hour before dawn.

NPR: Argentina: Flooding From Torrential Rains Kill 52

The building burned from the inside, and firefighters had extinguished the flames before dawn.

NPR: 13 Youths Die In Fire Myanmar Police Call Accident