n.
周期sp.名词period的复数形式.periods
名词periodan amount of time
the interval taken to complete one cycle of a regularly repeating phenomenon
(ice hockey) one of three pisions into which play is pided in hockey games
a unit of geological time during which a system of rocks formed
the end or completion of something
the monthly discharge of blood from the uterus of nonpregnant women from puberty to menopause--Hippocrates--Aristotle
a punctuation mark (.) placed at the end of a declarative sentence to indicate a full stop or after abbreviations
periods例句
用作名词(n.)
The bitch's cycle is pided into four periods.
母犬的***周期被分为一下四个阶段。
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。
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