The basic problem is that it takes a long time to develop a new sequence of lectures and very little time to give last year's lectures, so things change only slowly.

最根本的问题是，开发一种新授课顺序需要花费很长时间，上一年度的授课时间会变得非常少，因此，这种变化只能缓慢进行。

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While many chronic conditions develop slowly, changes in lifestyles and behaviours are occurring with a stunning speed and sweep.

许多慢性疾病发展缓慢，但生活方式和行为变化却以惊人的速度席卷全球。

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As well as being at increased risk of a series of respiratory conditions, the lungs of children who breathe in passive smoke may also develop more slowly than children who grow up in smoke-free homes.

除了对儿童的呼吸道产生一系列的危害外，经常被动吸入香烟的儿童，其肺功能的发育要比无烟家庭孩子的来得慢。

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The International Rice Research Institute is working to develop kinds of white rice whose starch is released more slowly.

VOA: special.2010.06.30

he really did slowly develop a passion for studying languages, at least English.

他真的慢慢开始对学习语言产生热情了，至少是对英语。

留在记忆中的学生 - SpeakingMax英语口语达人

Yet their genetics have caused pandas to develop more slowly than human beings and other mammals.

VOA: special.2010.01.19

Acute coronary syndrome may develop slowly over time by the building up of plaques in the arteries in your heart.

CNN: Acute coronary syndrome

She said that because some conditions only develop slowly that people would not be aware of them until their condition had significantly deteriorated.

BBC: NEWS | Health | Many drivers 'have poor eyesight'

Unlike his new conservative colleagues, Stevens, like Souter, thought that the law should develop slowly, over time, with each case building logically on its predecessors.

NEWYORKER: Money Unlimited