261. Because few mainstream publications have done in-depth features on regular African-American women, little is known about who we are, what we think and what we face on a regular basis.

因为很少有主流出版物对普通非洲裔美国妇女进行深入的专题报道，所以很少有人知道我们是谁，很少有人知道我们的想法以及我们经常会面临什么样的问题。

本句的主干是little is known about...。其中because引导的是原因状语从句；who和两个what引导的两个从句分别作介词about的宾语。

in-depth意为“深入的，全面的”。如：

It is time for in-depth reflection on moral. 现在是该对道德进行深入反思的时候了。

feature意为“特写；专题节目；特色”。如：

The magazine makes a feature of youth's stories. 该杂志以刊登青少年的故事为特色。

on a regular basis意为“定期地；经常地”。如：

I've been saving money on a regular basis for ten years. 10年来，我始终坚持定期存钱。

与basis有关的短语还有：

on a fifty-fifty basis对等地（平分）

Costs are to be shared on a fifty-fifty basis between the manufacturer and distributor. 费用由厂商和批发商均摊。

provide a...basis for 为……提供……根据

Religion should not provide the basis for ethics. 宗教不应该为道德规范提供依据。