The troops landed at dawn.

部队已在黎明登陆。

《牛津词典》

At dawn the army attacked the town.

军队在拂晓时向这座城镇发动攻击。

《牛津词典》

They start work at dawn.

天一亮他们就开始干活了。

《牛津词典》

Dawn DeMeo is an assistant professor at Harvard Medical School in Boston,Massachusetts.

VOA: special.2009.06.03

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

Yes and no. It was fascinating to be as Wordsworth says, "Bliss was it in that dawn to be alive" -to be around in those days, but at the same time I think it's rather advantageous for us to be still "in theory."

可以说会，也可以说不会,正如华兹华斯所说，“能活在那黎明时光是何等幸福“,虽然过去对人有很大吸引力，但同时我们还是,只在理论层面研究比较好“

耶鲁公开课 - 文学理论导论课程节选

At dawn, the amplified strains of the call to prayer issue from tapering minarets in every suburb.

BBC: A perfect day in Istanbul

The 28-strong group is believed to have reached 4, 000m (13, 120ft) when the avalanche struck at dawn.

BBC: Why risk an avalanche to climb?

Two months later, at dawn, we pulled out of our driveway, loaded for California.

FORBES: The Photograph