英语语法分析

Although the issue was unrated, it was heavily oversubscribed.

虽然发行的债券没有被评级，却被大量地超额认购。

Of the bonds, three-quarters were American, many of them unrated.

在债券上，四分之三是美国的，很多都未分级。

You may chose to rate a link from 0 to 9, where 0 implies that the link is unrated.

你可以选择将链接分为0到9个级别，0代表链接没有级别。