底部距离

例句：

1. 1. The baseline for our project is $50,000.
   我们项目的基准线是5万美元。
2. 2.The scientist used a baseline of 100 to measure the accuracy of his measurements.
   科学家使用一个基准线100来测量他的测量的准确性。
3. 3.The company's performance has been at a baseline level since last year.
   该公司的业绩从去年开始一直维持在基准水平。