The problem is that most parents are not even aware when it happens, yet studies show the battery begins to cause severe damage within just two hours of ingestion.

事情发生时，大多数孩子的家长还蒙在鼓里，然而研究表明，孩子误食电池后仅仅两个小时，便会对他们的身体造成严重损害。

youdao

The bank thinks the most likely outcome for 2009 will be a decline in remittances of just under 6%, though not enough is known about the impact of severe recessions to be sure of such predictions.

银行认为2009年最可能的结果是汇款仅下降6%，尽管由于没有对严重的经济危机对此的影响有多大足够的证据证明这种预测。

youdao

No, I'm not implying that we can instantly heal the pain of a severe or unexpected personal tragedy just by thinking about being happy.

不，我并不是指，只要想着自己的开心快乐的就能够解除一个人正经历的严重或意外的伤痛；

youdao

"There were severe weather problems, not just in Russia but also in some of the other former Soviet Union countries."

VOA: special.2010.12.07

"Given the Bank's caution, it does suggest that they are not particularly keen to loosen monetary policy just yet and that it would take some severe financial market problems or a major downward revision to the activity outlook to get them to move rates in October or even November, " said James Knightley of ING.

BBC: Consumer inflation rises to 4.7%

"We're not really sure if diet can cause these acne flares or maybe they just make them more severe, " she says.

BBC: Does chocolate give you spots?

It is reached when heat is so severe that illness and death may occur among the fit and healthy, and not just in high-risk groups.

BBC: Storms lash UK while SE sizzles