different period的用法和样例：
例句
- The autonomous cycle length varies at different periods in the life span.
自动周期的年度随人生不同阶段而不同。 - Animals have been friends or foes of humanity at different times of human history.
在人类历史的不同阶段，动物曾经是人类的朋友或者敌人。
different period的相关资料：
临近单词
different zone
different
different artificial disturbance
Different Source-Common Struct
differentiation and transferring
different species with same name
different trimester of pregnancy
different polar capillary column
different competition strategies
different degraded degree Steppe
different structure modification
different fertilizers treatments
