approach line

例句：

1. 1. The engineer drew a sketch of the approaching line on the map.
   工程师在地图上画了一条逼近线的草图。
2. 2.The construction workers were working diligently to meet the approaching line for the new bridge.
   建筑工人正勤奋工作，以期在新桥的逼近线前完成工程。
3. 3. The team was tasked with ensuring that the project met the approaching line for safety standards.
   该团队被指派确保项目符合安全标准，满足即将到来的线要求。