She must be seriously ill, for she was carried to the hospital on a stretcher.

她是被抬进医院的，可见病得很重。

Most people will not be seriously ill by viral gastroenteritis.

此病对多数人而言并不严重。

The results of the tests might also be of interest to companies offering life-insurance policies or medical cover that depend on a person's lifetime risk of falling seriously ill or dying prematurely.

验血结果（不仅能够告诉人们能够活多久）还会受这类公司的关注，如需要制定人寿保险单条款的保险公司和受突然重病或者过早死亡等风险因素影响的医疗公司。

A shock to be told I was seriously ill.

听说我的病很严重，我吃了一惊。