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Very rarely can I tell someone months in advance how long a software development project will take, if I have to be accurate to the day.

如果必须提前数月告诉某人某个软件项目要花费多长时间，而且必须精确到天，那么我几乎不可能做到这一点。

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Addressing these transnational risks requires advance preparation, extensive collaboration with the global community, and the development of a resilient population at home.

应对这些跨国风险，需要提前准备并与国际社会广泛合作，同时还要提高国内人民的适应力。

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The development is an incremental advance in a long-standing goal to produce transgenic milk with nutraceutical powers, said an expert in the field.

长久以来，人们无不想生产功能性营养牛奶，而此进展 是一个里程碑式的突破， 一位该领域的专家如是说。