光度测定的

例句：

1. 1. We need to determine the best course of action before we take any decisions.
   在做出任何决定之前，我们需要确定最佳行动方案。
2. 2. The scientist determined that the temperature had dropped significantly.
   科学家确定温度已经显著下降。
3. 3. The teacher determined that the students needed more practice in mathematics.
   老师确定学生们需要在数学上多加练习。