standard stocks

例句：

1. 1.The standard for measuring the length of a ruler is 20 cm.
   测量尺子长度的标准是20厘米。
2. 2. Standardization is the process of making things uniform across different regions.
   标准化是使不同地区的事物统一的过程。
3. 3. The company's standards are high and they expect their employees to meet them.
   公司的标凈很高，他们期望员工达到这些标准。