Dozens of jeeps carrying masked Israeli commandos rolled into the West Bank town of Nablus before dawn and surrounded the homes of three Palestinian gunmen.

VOA: standard.2009.12.26

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

Astronauts opened the shutters of this new picture window in space before dawn Wednesday.

VOA: standard.2010.02.18

The new schedule calls for Endeavour to lift off before dawn on Wednesday, the same day that NASA had hoped to launch a separate mission to survey the moon.

VOA: standard.2009.06.16