一天晚上，在长时间的辛苦工作后，她做了晚饭。
他做了所有的艰苦工作——需要的所有数学——但他没能超过这一界限，你也许会问自己“为什么呢？”吧。
He did all the hard work-all the really necessary mathematics - but he was not able to go beyond that and you will ask yourself, 'Why'?
一天辛苦工作之后，他很快睡着了并做了个奇怪的梦。
After a day's hard work, he fell asleep soon and had a strange dream.
人们已经做了大量的艰苦工作，提出了许多新的假设，并化成了各种各样的公式。
Lots of hard work has been done, many new hypotheses hypothecated, and all sorts of formalisms formulated.
人们已经做了大量的艰苦工作，提出了许多新的假设，并化成了各种各样的公式。
Lots of hard work has been done, many new hypotheses hypothecated, and all sorts of formalisms formulated.
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