It's very important for improving the lives of individuals, however, it is estimated that 880 million adults around the world are illiterate, that is, they are unable to read or write.
这对改善个人生活非常重要，然而，据估计，全世界有8.8亿成年人是文盲，也就是说，他们不会阅读或写字。
The spreading of sector addresses around the disc gives the operating system time to process each before the next reaches the read-write head.
把区份地址分散于磁碟上，操作系数便有足够时间，在读写头到达另一区份前，逐个地址处理。
By constantly listening to and imitating the people around him, he learned to read and write before they have been proficient at using language.
通过不断地聆听和模仿他周围的人，他在学会阅读和写字之前就已经能熟练地使用语言了。
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