Sasd
结构化分析和结构化设计
🗣️ 情景例句
A list of these items and a volunteer form
这些物品的清单和义工申请表格
Which one is more interesting?
哪一个是比较有趣的？
It can take as long as eight days to rig up rope ladders and to establish supply bases before a descent can be made into a very deep cave.
有时需要花费整整8天时间来搭起绳梯，建立供应基地，然后才能到一个很深的洞穴里。