有一家空调生产企业，工厂日产空调1000多台，生产计划变化频繁。

As many as 1, 000 air conditioning units roll off the assembly line daily at one factory, and the manufacturing schedule changes frequently.

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由于改变了训练计划，需要大约三周到一个月的时间才能注意到自己体重的明显变化。

It takes about three weeks to a month to notice significant changes in your weight due to altering your training program.

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蒂姆·约瑟夫的草饲计划只是美国农业实践正在发生变化的其中一个例子。

Tim Joseph's grass-fed program is only one example of how American farming practice is changing.

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So the reasons for this really enormous shift in plans, and the enormous shift in subject matter, are worth exploring.

弥尔顿的计划变化为何如此之大，他对主题的选择为何有这么大的改变，是值得探究的。

耶鲁公开课 - 弥尔顿课程节选