There is the danger that the high-speed connectivity of the Internet will reduce our attention span—that we will be incapable of reading anything of length or which requires deep concentration.
Therefore, the X-axis span should be divided into four equal segments oflength=span/4.
所以，应该将 X 坐标轴的跨度分成 4 个相等的区段，每个区段的长度 = 跨度/4。
3
Suppose a failure occurs between numbered steps 4 and 16 from Figure 3. Database-1 records remain locked somewhere in that span, perhaps for an indeterminate lengthof time.