我到那里时大概是黎明时分，而这正是关键时刻。

I was there around dawn, which was crunch time.

youdao

所有在黎明破晓时从巢穴中飞出来海鸟都只出现在最后一帧中。

Flying from their nests at the break of dawn, all the ocean birds appear only in the last single frame.

youdao

在黎明和黄昏时袭击英国阵地成了惯常行为，一支威尔士卫队在一天内遭到15次袭击。

Attacks on the British positions at dawn and dusk are routine; one Welsh Guards company was attacked 15 times in a day.

youdao

The Morning Star is that heavenly body which is the last heavenly body that's still visible as dawn comes in and it begins to get light.

晨星就是,这样一个天体,它是黎明来临,天快亮时,还能看到的,最后一颗星星

耶鲁公开课 - 死亡课程节选