The network planning of the urban rail transit is a sub-plan of the transport planning field, meanwhile, it is the important component of the comprehensive transport planning system.
城市轨道交通网络规划是城市交通规划领域的一个专项规划，同时也是综合交通规划体系的重要组成部分。
2
Plan each part of the task so that you are focusing on completing the sub task rather than the overall task.
对每一部分的任务作出计划，这样你能够将注意集中到完成子任务上而不是整个任务。
3
As we've discussed in this article, the DB2 optimizer may choose a sub-optimal access plan when there are host variables or parameter markers in the SQL statement.