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1.are due to 由于，因為
例句：These changes are due to an increase in carbon dioxide put into the atmosphere since the beginning of the Industrial Revolution.
這些變化的原因是，從工業革命開始，人類排放到大氣中的二氧化碳增加了。
2.toil away 吃力地走開，長期勞累
例句：ony, a Greek immigrant whose uncle owned the place, ran the diner at night. He gave me endless free refills of coffee as I toiled away.
托尼是一個希臘移民，他的叔叔是這個餐館的老板，到了晚上托尼負責打理餐館的生意，在我辛苦備課的過程中，托尼總是為我免費續上咖啡。
