A definite portion of time, the beginning and end of which are fixed.

期；时期。

Any space of time.

期间。

A dot (.) used as a mark of punctuation, as at the end of a complete declarative sentence, or after an abbreviation.

句点（.）。用于句末或缩写字之末。

The menses; occurrence of menstruation.

(常用复数)月经；月经期。

The time of one revolution of a planet, satellite, or comet.

(行星、卫星或慧星之)运行周期。

A complete sentence; specif. a sentence in which the completeness of the thought is purposely withheld until the end.

完全句；特指掉尾句(至结尾句意始完成之句)。

Flowing or rhetorical sentences.

[~s] 工整之句；绮丽之文。

A full pause at the end of a complete sentence.

全句结束时之停顿；终止。

Concluding point of a cycle of events or of a specified length of time.

(周期)结束；最后阶段。

Specific length of time into which a school day or certain games are divided.

(学校上课或比赛的)一节。

Basic unit of geological time, a subdivision of an era.

【地】纪。

Duration of one complete cycle of a wave.

【理】(一波形的)周期。波动完成一次完整振动所需要的时间，为频率的倒数。

Complete musical with a cadence.

(完整的一段音乐，有八小节长)以终止记号作结尾的乐句。

Characteristic of a style current at a certain time in a history.

有某一时代风格的。