名词 period:

1. an amount of time

2. the interval taken to complete one cycle of a regularly repeating phenomenon

3. (ice hockey) one of three divisions into which play is divided in hockey games

4. a unit of geological time during which a system of rocks formed

5. the end or completion of something

6. the monthly discharge of blood from the uterus of nonpregnant women from puberty to menopause--Hippocrates--Aristotle

7. a punctuation mark (.) placed at the end of a declarative sentence to indicate a full stop or after abbreviations

peripateticn.巡行者；巡游adj.巡游的；兼职的Peripatetic.n.亚里士多德信徒adj.亚里士多德学派的periodicaln.期刊adj.定期的periods-model周期模型periods analysis周期分析Periods of Action除斥期间periods of benefit[经] 受益各期periods processing分段处理periods per second赫periods of warlords军阀时期Periods of seedling育苗周期periods synthesizer周期合成periods of processing加工阶段

1. The bitch's cycle is divided into four periods.
   母犬的发情周期被分为一下四个阶段。
2. Timer must be disabled when graphing readings for extended periods.
   当在观看较长周期的图形和读值时，必须关闭定时器。