The common symptoms of the disease include nasal obstruction and bone erosion in severe case.

该病的常见症状是鼻阻塞，严重者可引起骨质破坏。

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In less severe case, a simple repair was necessary, in severe case, the propeller should be replaced.

遇到这种情况只能进坞修理。轻者简单维修，重者直接报废更换新的螺旋桨。

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In the case of lead exposure - even at relatively low levels - continuous exposure may have severe effects, such as anaemia, malaise, and damage to the nervous system.

就铅接触而言—甚至较低量—持续接触可产生严重影响，如贫血、不舒服和损伤神经系统。

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But in the case of severe disabilities, most people are in no doubt that life is worse.

但是在严重残疾的例子里，大多残疾人都毫无疑问地认为,自己的生活就是糟糕的。

普林斯顿公开课 - 人性课程节选

It's contagious, that is, it's transferred to other persons or objects, depending on how receptive they are--perhaps by physical touch, perhaps in the case of severe impurity by sharing an enclosed space, by being together under an overhanging roof, tent.

它会传染给另一个人，另一个物体，这取决于它们的接受度，也许是通过肢体接触，也许是因为呆在一个与世隔绝的空间里，同在一个屋檐下。

耶鲁公开课 - 旧约导论课程节选

Dr. Clarke says he found that about one-third of his patients with heartburn didn't get better on proton-pump inhibitors, or have evidence of acid reflux, but in virtually every case, they had severe stress in their lives.

WSJ: Why Your Heartburn Drugs Don't Work

This winter's flu has been far less severe in terms of case numbers than the one which preceded it.

BBC: Flu jab could beat allergies

Mr James argues that the international economic order of the late 19th century in any case contained severe and possibly fatal flaws.

ECONOMIST: Lessons from the Great Depression