at the crack of dawn

基本解释

And inasmuch as I had to be in midtown at the crack of dawn for a CNN hit, I figured today was the day.
正好，早上我要去市中心做一個CNN的採訪，擇日不如撞日，今天我就殺奔蘋果店了。
He gets up at the crack of dawn to do a couple of hours’ extra ploughing. He even refuses to take a day off when he splits his hoof.
他每天天剛亮就起牀，以便能多耕幾小時的地，甚至在馬蹄撕裂的情況下，他都拒絕休假一天。
One week later, I lived in the den of my grandparents' apartment, got up at the crack of dawn and worked in a place where I was so intimidated that I didn't get up to go to the bathroom.
而畢業一個星期後，我搬到祖父母公寓的一個小房間裡，天剛擦亮就起牀，工作的時候嚇得都不敢站起來去上厠所。

Boston this afternoon for the EnergySMART 2012 Conference, which kicks off tomorrow at the crack of dawn.
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