Rick Sharga from RealtyTrac says up to one-fourth of all homes that still have a mortgage loan balance are in this situation.

VOA: special.2011.01.24

And he didn't live long enough quite to well he actually lived long enough but he didn't really write about what I would add as a fourth one but he said the Civil Rights revolution finally began to liberate the South.

他最后没有完成就溘然长逝了,呃,他算活得够长的了,但他没有加第四点,第四点我自己补充的,他说民权革命最终,将解放南方

耶鲁公开课 - 美国内战与重建课程节选

The reason that 3' is important is that when you polymerize two nucleotides together and a third nucleotide, and a fourth nucleotide, when you polymerize nucleotides together they get polymerized, the phosphate of one gets linked to the 3' carbon of another.

'碳部位重要是因为,当你把两个核苷酸聚合在一起,然后再聚合第三个,第四个的时候,核苷酸在聚合时,磷酸基与另外一个戊糖的3'碳部位连接

耶鲁公开课 - 生物医学工程探索课程节选

One family from Ohio has a very different kind of Fourth of July tradition in their neighborhood.

VOA: special.2010.07.02

One hour marks one twenty-fourth of a turn, or fifteen degrees.

VOA: special.2010.07.14