roughing-out pass

例句：

1. 1. The engineer was asked to rough out a design for the new bridge.
   工程师被要求为新桥梁设计一个粗略的方案。
2. 2. During the roughing-out process, they made several adjustments to the plan.
   在粗略计算过程中，他们对计划进行了几次调整。
3. 3. The team worked quickly and efficiently during the roughing-out stage.
   团队在粗略计算阶段工作迅速且高效。