每日商务英语 第681期:在破晓时分

ing-bottom: 56.25%;">

at the crack of dawn --------- 在破晓时分

英文释义
Very early in the morning, just as the sun is appearing on the horizon.

例句
We started our long journey at the crack of dawn.
我们在破晓时分开始了漫长的旅行。