A new ring is added every year, and thicker rings represent a kind of savings account, when the tree collects more nutrients than it can use.

VOA: standard.2010.04.05

And I worked with that account book, because one of the two slaves I write about in this new book called A Slave No More I publish their two narratives was indeed a young 14-year-old teenager, sold out of North Carolina--from Snow Hill, North Carolina, he was sold in 1860 to Hector Davis in Richmond.

我研究过这本账簿,因为我在这本新著《从奴隶到自由》中,引用了两名奴隶的自述,当时他们年仅十四岁,其中一个从北卡罗来纳州,从北卡罗来纳的斯诺希尔被卖掉,在1860年被卖给了,里士满的赫克托·戴维斯

耶鲁公开课 - 美国内战与重建课程节选

With Iran now facing intensified pressure to provide a complete account of all of its enrichment and any weapons-related activities, revelation of the new enrichment facility reinforced the determination of U.S.lawmakers to move ahead with tougher sanctions.

VOA: standard.2009.09.25