Now when Black Boy was published there was a war bond advertisement on the back cover of the book.

当《黑孩子》出版时,战争债券的广告是附在书后的。

耶鲁公开课 - 1945年后的美国小说课程节选

I just come back with my black coffee and my double espresso mocha latte skinny frothed, except it isn't espresso.

我回到桌位上，双手拿着我的黑咖啡,和一杯双倍浓度无咖啡因少泡沫的穆哈咖啡，其实不是无咖啡因的。

耶鲁公开课 - 心理学导论课程节选

It makes us think about black artists playing for a living in Prohibition Era back rooms.

它使我们想到在禁酒令时代的小密屋里,那些演奏谋生的黑人艺术家。

耶鲁公开课 - 现代诗歌课程节选

So what we see in the publishing history of Black Boy and also in its reception brings us back to those questions that I was raising at the beginning of class.

黑孩子》的出版经历,以及出版之后的反响,让我们又回到了我一开始提到的那些问题。

耶鲁公开课 - 1945年后的美国小说课程节选

So, if you use a black lamp or something and you excite something up to a higher energy level and then it relaxes back down to its lower energy state, it's going to emit a new wavelength of light, which is going to be visible to you.

如果你用一个紫外灯或别的,东西把某种分子激发到,更高的能级，然后它会掉回,到低能级，它就会释放,一个新的波长的光,这个光是可见的。

麻省理工公开课 - 化学原理课程节选