The letter looked very old and dirty.

VOA: special.2009.12.26

This remarkable letter was written when Plato was very old, approximately 50 years after the trial and execution of Socrates.

那封了不起的书信,是在柏拉图年迈时所写，大约是,苏格拉底被审判及处决后的，50，年。

耶鲁公开课 - 政治哲学导论课程节选

I think it's in part that, suffering from lupus, she was very much confined to her house in Georgia, and the letter writing, this kind of correspondence, was certainly a way for her to keep in contact with the world of readers and other writers and friends.

我想这多少与她，受病痛的折磨有关，受制于病情，她只能呆在,乔治亚州的家里，足不出户，所以写信，必然是她和读者、,其他作家和朋友联系的方式。

耶鲁公开课 - 1945年后的美国小说课程节选

"This bipartisan letter from senators to the administration is a very significant one because of the growing opposition both among Republicans and Democrats to holding the trial in New York,but too,in the end, the Congress has the power of the purse,"

VOA: standard.2010.01.30

Well, get string again is returning the address of the string the user typed in, D the address of the very first character like the letter D and storing that address in this variable s1.

好的，GetString返回的是,用户输入的字符串的地址，第一个字符的地址，比如字母,然后把这个地址存储在这个变量s1中。

哈佛公开课 - 计算机科学课程节选

They both start with the letter D but they're very different concepts.

他们都是以D开头的,但却是截然不同的概念

耶鲁公开课 - 金融市场课程节选

This might look a little cryptic at first, but it turns there is some very obvious patterns here, for instance. According to this chart, if you want to represent the letter A A in the so called ASCII system, what number do you actually use to do so?

起初，它看起来有点神秘，但你会发现它有一些明显的对应模式，这里就有例子，根据图表，在所谓的ASCII系统中,你想表示字母，你该用哪些数字呢？

哈佛公开课 - 计算机科学课程节选