We left at first light.

我们黎明时离去。

《牛津词典》

We will start off at first light.

我们天一亮就出发。

youdao

At first light he was still five miles from shore.

曙光初现的时候，他离岸还有五哩。

youdao

After Gatsby's death,Nick Carraway, the storyteller,says: "I thought of Gatsby's wonder when he first recognized the green light at the end of Daisy's boat dock.

VOA: special.2010.11.28

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 a story that is predominantly in Genesis 2 and trickles into Genesis 3 and I'm going to look at it mostly in isolation from the first account.I'm going to be looking at it in light of an important parallel.

这个故事在《创世纪》2，3章中占据很重要的地位,我采用脱离对第一个故事的描述方法,将这两个故事，放在同等重要的位置上来解读。

耶鲁公开课 - 旧约导论课程节选

The ship departed the wind-blasted town of Puerto Natales at first light, with passengers boarding the night before.

BBC: Patagonia��s ice-carved waterways

It was called off as dark fell and will resume at first light on Sunday.

BBC: Skier missing after avalanche near Glencoe Ski Centre

It appears that the Saldanha was seized either at night or at first light about 60 miles (100km) from the Northumberland's location.

BBC: y inflatable alongside the skiff