And alcohol drinking is rare in many parts of the world, including Muslim countries and India.

VOA: special.2009.09.08

So Roman slavery and the freedom of that was actually one way that a few people in the Ancient World recognized some kind of social mobility, which was very rare in the Roman Empire.

所以罗马奴隶制以及奴隶释放制,被古代部分人认为是,某种社会阶级流动，在罗马帝国很少见。

耶鲁公开课 - 新约课程节选

And, in a rare moment of sort of personal self-reflection or self-reference, he notes somewhat drolly that the novelty of his ideas will make it difficult for them to find an audience.

虽然他很少对自己的思想,进行自我反思或自我参照，但他还是自嘲地写道,那些新奇的思想会让它们,很难找到读者。

耶鲁公开课 - 政治哲学导论课程节选

In addition to the study and care of rare wildlife, the institute has another purpose.

VOA: special.2010.06.22

You have a full monarchy in the sense that both-- we in America talk about the separation of church and state, that is a very rare and unusual thing in the history of the world.

他有一个完全政教合一的君主政权,在美国政教是分离的,这在世界历史上很少见

耶鲁公开课 - 古希腊历史简介课程节选

But keep in mind that the scientists say this mutated gene may be rare.

VOA: special.2009.08.26

Now, in the process of doing that they found some very rare stem cells that are called pluripotent, pluri just means many potencies.

如今在这种研究进行的过程中,他们发现了一些非常稀少的干细胞,称为多能干细胞,pluri这个前缀就是指很多能力

耶鲁公开课 - 生物医学工程探索课程节选

Since he was attacked, the Yellows have brought in their own security guards from around the country to protect his rare rallies.

VOA: standard.2010.05.25

"It is somewhat rare,". "We do work in many sensitive parts of the world and we are in more than 140 countries.

VOA: standard.2009.09.06

Yet despite these pending and ongoing disasters, environmental awareness remains rare in a country where half the people live on less than $2 a day.

VOA: standard.2010.04.01

"What makes it so rare is that it is highly endangered in the wild, in Sumatra, and it is so hard to get to bloom in cultivation."

VOA: standard.2010.07.30

In the early 1990s, Klug had been diagnosed with a rare disease known as Primary Sclerosing Cholangitis (PSC), a rare degenerative liver condition that requires a transplant.

VOA: standard.2010.02.26

These genes are involved in a number of inherited metabolic disorders, including Tay Sachs, a rare,incurable and usually fatal disease that causes the destruction of nerve cells in young children.

VOA: standard.2010.02.11

In a rare meeting with Republican Party lawmakers Friday, President Barack Obama decried the partisan politics of the past and urged both parties to work together on creating more jobs for Americans.

VOA: standard.2010.01.29

This is clear that this was a mistake,". He added that incidents such as this one are rare, especially after the United States imposed new restrictions on air strikes in an effort to avoid civilian casualties.

VOA: standard.2009.11.07

It was a rare sight Friday in the South Korean capital: Senior North Korean envoys approached a memorial to former President Kim Dae-jung with a giant funeral bouquet bearing the name of North Korean leader Kim Jong Il.

VOA: standard.2009.08.21