When he took office several months later, he faced the most serious crisis in American history.

VOA: special.2009.07.16

You turned so serious when the corpse was carried past us; are you afraid of death?

尸体被运送经过我们时，你是那么严肃;,你害怕死亡吗？

耶鲁公开课 - 死亡课程节选

When you're serious, any way to win will do, but mostly you could make a virtue of a necessity.

一旦你较真,你会为了胜利不择手段,但通常你会在之前进行道德的考虑

耶鲁公开课 - 古希腊历史简介课程节选

When she returned to the United States she again suffered a serious sickness.

VOA: special.2009.07.26

That's why I turned more serious even than you did, deeper in the soul, " when the corpse was carried past us The poem is called Separation.

所以我才如此严肃，甚至更胜于你，至灵魂的深处，当尸体被从我们身边运过,这首诗叫做《分离》

耶鲁公开课 - 死亡课程节选

This is when the bone breaks the skin.This is very serious.

VOA: special.2009.02.04

When he laughed, was witty, in a merry humor, one could scarce sees his eyes, and by and by, when he was serious and positive, he opened his eyes round.

当他笑时，他是睿智的，带有令人愉快的幽默，都看不见他的眼睛了，不一会儿，他变得严肃和积极了，便圆睁着眼睛。

耶鲁公开课 - 政治哲学导论课程节选

Then,when the parasite enters the brain, it causes more serious problems.

VOA: special.2010.04.07

And perhaps that is pastoral in a way, going back to what you said, that I do think of myself in many ways as doing pastoral counseling, particularly in the most difficult circumstances when there's been a crisis, a death, a serious accident.

也许某种意义上这像是种牧师与受众，回到你刚才说的，很多时候我觉得自己,就是作为一个牧师指导学生，尤其是在极其困难的情况下,比如出现了危机，伤亡，或者严重事故。

普林斯顿公开课 - 人性课程节选

"At a time when we're fighting two wars and facing a serious deficit, this would have been an inexcusable waste of money.

VOA: standard.2009.07.21

The most serious occurred in 1918 when upwards of 50 million people are believed to have died.

VOA: standard.2009.05.14

It was the most serious clash on the border since the Lebanon War four years ago, when Israel battled the Islamic guerrilla group Hezbollah.

VOA: standard.2010.08.03

And,there is a serious problem when you use the term 'regime change' that you might encourage people to demonstrate,or to act in ways, where we can do absolutely nothing to protect or encourage them."

VOA: standard.2010.06.11

In fact most global automakers have signaled that they are going ahead with plans to open new factories in India at a time when many of them are facing a serious slump in their home countries.

VOA: standard.2009.03.13

"And this is why we are asking the United States to ensure that material assistance and training that is given to security forces in Somalia are accompanied by vetting of personnel and the creation of specific mechanisms to respond to serious abuses when they occur,"

VOA: standard.2009.07.31