"And those kids have much more serious, much more severe neurological problems.

VOA: special.2010.05.26

You might have that commonly, but even more severe than normal; aches; and a rash.

你们都有过这种经历,有时也许比平常的更加严重,疼痛,皮疹

耶鲁公开课 - 生物医学工程探索课程节选

And he hypothesized that they were getting the disease in cows, which the disease from cows that caused a milder disease than smallpox, and that protected them from getting the more severe forms of smallpox later.

他假定奶牛将这种疾病传染给挤奶女工,这种源自奶牛的疾病比天花更温和,它保护女工们,免受更为严重的天花感染

耶鲁公开课 - 生物医学工程探索课程节选

but still they sat and talked. The ringing became more severe.

VOA: special.2009.05.16

"Piling on additional obligations would mean even more severe cuts to roads,schools, law enforcement and other essential state services."

VOA: standard.2009.10.10

And we will not know that until this goes much further, and we see whether this infection becomes more severe or goes away,".

VOA: standard.2009.04.30

(Voice) On flu and parenting Web sites, the parties are being debated as a way to gain immunity to more severe versions of the virus that might emerge later.

VOA: standard.2009.12.18