triple-leaf standard

例句：

1. 1.The triple-leaf standard is used to identify the species of a plant.
   三叶草标准用于识别植物的物种。
2. 2. The company has adopted the triple-leaf standard for its products.
   该公司已采用三叶草标准对其产品进行认证。
3. 3. The new policy is based on the triple-leaf standard, which emphasizes environmental sustainability.
   新政策基于三叶草标准，强调环境可持续性。