standard clock

例句：

1. 1. The standard for measuring the length of a football field is 105 yards.
   测量足球场长度的标准是105码。
2. 2.The company's policy on employee benefits is based on industry standards.
   该公司的员工福利政策是基于行业标准的。
3. 3.The new product has been designed to meet international safety standards.
   这款新产品已经设计以满足国际安全标准。