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Scientists are on the threshold of a breakthrough in their treatment of that disease.
科学家在治疗那种疾病方面很快就要取得突破.
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Scientists are now on the threshold of a better understanding of how the human brain works.
科学家对于人类智慧如何运作现在已开始有了较进一步的了解.
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Standing on the top of the mountain, you can see the full extent of the forest.
站在山顶上, 你可以看到森林的全貌.
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