基准线

例句：

1. 1. The engineer drew abaseline for the new bridge.
   工程师为新桥画了一条基准线。
2. 2. Thecompany's performance isclosely tied to its financial metrics, which are based on a setof reference lines.
   公司的绩效与财务指标紧密相关，这些指标基于一组基准线。
3. 3. The scientist used a laser to measurethe height of the mountain, setting anew baseline for measuring elevation in this region.
   科学家使用激光测量了这座山的高度，为该地区测量海拔设定了新的基准线。