effective green time

例句：

1. 1. The company has introduced a policy to encourage employees to use their effective green time for exercise.
   该公司已推出政策，鼓励员工利用有效绿色时间进行锻炼。
2. 2. During the effective green time, the students were able to complete their homework and study for exams.
   在有效绿色时间内，学生们能够完成作业和为考试做准备。
3. 3. The teacher suggested that students take advantage of the effective green time to review their notesbefore class.
   老师建议学生利用有效绿色时间在课前复习笔记。