Now a system has been developed to make it easier for blind people to navigate the Internet, use word-processing software and even trace the shapes of graphs and charts.
目前，已研制出的一种系统，可以让盲人更加容易地浏览网络，使用文字处理系统，甚至可以感知图表的形状。
2
And in East and West alike, scholars can trace how the role of the written word shifted over time.
不管是东方还是西方，学者都能追询到书本用途的变迁。
3
The second big advantage is that he what word is the same, have no trace.