standard cosmological model

例句：

1. 1.The standard for measuring height is the average of two measurements taken at different angles.
   测量身高的标准是在不同角度测量两次后取平均值。
2. 2. The company's standard operating procedures are clearly outlined in their manual.
   该公司的标准操作程序在手册中明确列出。
3. 3.The standard deviation measures how spread out the data points are from the mean value.
   标准差衡量数据点与均值之间的分散程度。