to be in the black

"It's no disgrace to be colored," the black entertainer Bert Williams famously observed early in the century, "but it is awfully inconvenient."

黑人表演者伯特·威廉姆斯在本世纪初提出了一条著名的观点：“作为有色人种并不丢脸，但是极其不方便。”

In the United States they were considered to be Black, a social definition that was feasible because they were in the minority. In Brazil, it was not feasible.

在美国，他们被认为是黑人，这种社会定义是可行的，因为他们属于少数群体。在巴西，这是不可行的。

Bar codes, familiar to us all as the black and white rectangular mark that enables products in a supermarket to be tracked, represent data using the spacing of parallel lines.

条形码就是我们大家都熟悉的超市中用来跟踪商品的那些黑白色相间的长条标记，它利用这些黑白色平行线的间距来表示数据。