Specialized avian pathologists have evolved to guide the course of health control measures.

现在已有受过专门训练的禽病理学家来指导保健措施的进行。

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When the sky is clear, the sun and the stars help to guide the course, and if they are followed one is saved from traveling in a circle, as the lost are pretty sure to do in a dense forest.

当天空很晴朗的时候，太阳和星星可以指明方向。如果在它们下面有个人在密林里迷路了，总在原地绕圈那个迷路者更应该利用它们来找到方向了。

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Today sees the launch of the second Guardian postgraduate guide, which is designed to help would-be students choose the right course and institution for them.

今天，看完卫报的第二份研究生指南，你就会选到合适的课程和学院了。 本指南专为帮助那些准研究生而设计。

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The state of a marriage is a poor guide to the course of a Presidency.

NEWYORKER: State of the Union

They would need to guide the company along a strategic course, viewing both opportunities and crises through that lens.

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Of course, the Guide is merely best practices, and is not a statement of the law.

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