Cleveland open-cup tester

例句：

1. 1. This Cleveland Open-cup Tester is the best tool for testing the quality of our new coffee beans.
   这台克利夫兰开口杯测试器是我们新咖啡豆质量检测的最佳工具。
2. 2. The Cleveland Open-cup Tester was invented by a scientist who wanted to improve the taste of coffee.
   克利夫兰开口杯测试器是由一位科学家发明的，他想要改善咖啡的味道。
3. 3. The Cleveland Open-cup Tester is used to measure the acidity and bitterness of coffee.
   克利夫兰开口杯测试器用于测量咖啡的酸度和苦味。