Similar advances with other crops have released people from hard and boring jobs for more creative work, whilst machines harvest crops more efficiently with less waste.

对于其它作物，相似的改进把人们从艰难又枯燥的工作中解放出来，可以做更多创造性的工作，同时机器收割庄稼的效率更高，浪费更少。

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In the letters their father sends home, he tells his daughters to work hard and not to waste their time.

在父亲寄回家的信中，他告诉女儿们要努力工作，不要浪费时间。

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Have you ever heard of "Who knows that each bowl of rice is the fruit of hard toil?" It tells us not to waste food.

你有没有听说过“谁知盘中餐，粒粒皆辛苦？”它告诫我们不要浪费食物。

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Like the proverbial dog that caught the bus, Obama now fully owns the economic crisis he worked so hard not to waste.

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If teams find waste oil hard to come by they can load up with fresh cooking oil from supermarkets.

CNN: Chip pan rally

You can only imagine the frustration of having months of hard work go to waste because of a silly mistake.

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