surveying , textual notes , definitions , headings , redlining

测量，文字注释，定义，标题，以红线显示

Electronic redlining occurs when a telecoms company intentionally limits the availability of high-speed broadband services in minority or poor neighbourhoods .

如果某电信公司故意对少数族裔地区或者贫困地区的高速宽带服务的可获性进行限制，则构成电子歧视。

This practice is known as reverse redlining .

这样的做法被认为是逆向歧视。

The legislative background of that is : the invalid market and racial discrimination leaded to lone rejected in redlining , what severely affected the credit requirements of low - and moderate-income communities and borrowers .

其立法背景是由市场失灵、种族歧视等原因引起的划红线拒贷现象，这种现象使得美国中低收入社区的居民的信贷需求无法获得满足。