at discrete amounts of time

• 每隔一段时间； 间断地

at discrete amounts of time的用法和样例：

例句

1. He kept his students at their studies.
   他要他的学生们不间断地学习。
2. Disfiguring subcutaneous lesions bulge onto the surface and at intervals discharge pus.
   皮下损害的形象是向表面凸起，并间断地分泌出脓液。