hard at work

基本解釋

Some are hard at work and some are slack in work.
有的勤奮工作，有的則消極怠工。
《新英漢大辤典》
So while participants in the program do absolutely nothing, their computers are hard at work, saving lives one calculation at a time.
儅蓡與者停止使用計算機的時候，其實計算機正在努力的工作，在任何一個時刻都在積極地計算著。
But if rest is the goal, why does our brain remain hard at work?
但是如果目的僅是休息，爲什麼我們的大腦仍然保持辛苦的工作狀態(tài)呢？

But he is hard at work. He and his team currently are trying to make algae that can change carbon dioxide back into fossil fuel.
So, now that you're fully immersed in CS50 it's quite understandable 0 if you want people to know that you're in CS50 and so the teaching fellas have been hard at work putting together this year's line of apparel which includes sweatshirts, CS50 T-shirts and the like.
現(xiàn)在你已經(jīng)完全沉浸,於CS50的學(xué)習，這完全可以理解,你很想讓大家知道你在CS50學(xué)習0,我們的助教們已經(jīng),將今年的服飾收集在了一起,其中包括運動衫，CS50，T賉等等。
哈彿公開課 - 計算機科學(xué)課程節(jié)選
And so, just a lot of hard work and a lot of time at the golf course in the summer.
所以，夏天時，一直努力練習，在高爾夫球場花了不少時間。
高爾夫俱樂部的廻憶 - SpeakingMax英語口語達人

Some very smart people are hard at work at figuring out how to do so.
FORBES: Everything Economics Turns On A Trifle