star tester

例句：

1. 1. The star tester was used tomeasure the brightness of stars.
   星测试器被用来测量星星的亮度。
2. 2. Thestar tester helped astronomersto identify new celestial objects.
   星测试器帮助天文学家识别新的天体对象。
3. 3. The star tester wasused to study the properties of stars.
   星测试器被用来研究恒星的属性。