If the first command doesn't succeed, you will get plenty of error messages to help you find the problem, which is usually a missing gem or file.
如果第一条命令没有成功，您将得到大量错误消息以帮助您找到问题，这个问题通常是缺失一个gem或文件。
Ignore the later errors in the list; scroll upward until you find the first error message.
不要管列表中后面出现的错误，向上滚动找到第一个错误消息。
The basic idea of it is finding a available data segment first, then using principle of error assess area to find desultory point weeding them and comeback the available data by retrospect at last.
其基本思想是：先找到有效数据段，利用误差评定区域原则找到杂散点，最后剔除掉杂散点，同时采用回朔法恢复有效数据点。
应用推荐