periods
periods — 名詞
- periodssingular
- periodsesplural
1. lengths of time that are seen as separate stretches with their own beginning and
時段；期間
有明確起訖的幾段時間
lengths of time that are seen as separate stretches with their own beginning and end
The desert town faces long periods without rain each summer.
那座沙漠小鎮每年夏天都會有好幾段很久沒下雨的時期。
long periods without something
During busy periods, the bakery hires two extra workers.
在忙碌時段，麵包店會多請兩名員工。
during busy periods at work
Several quiet periods gave the nurses time to finish their notes.
幾段安靜的時間讓護理師有空寫完紀錄。
The twins slept in short periods through their first cold.
雙胞胎第一次感冒時，都是一小段一小段地睡。
文法句型
long periods of + noun
during busy periods
sleep in short periods
用法筆記
Common with of-phrases naming what fills the time, such as rain, silence, or waiting. Distinguish from noun/2, which is about recognized stages in history, art, or a person's life.
2. separate stages in history, culture, or someone's life that are identified as di
階段；時代
歷史、藝術或人生中的分期
separate stages in history, culture, or someone's life that are identified as different from one another
The museum displays coins from three periods of Roman history.
那座博物館展示了羅馬歷史三個時期的硬幣。
periods of history
Her poems from different periods show how her voice changed.
她不同時期寫的詩，能看出聲音風格的變化。
different periods in creative work
Teachers compared the two periods of the painter's career.
老師們比較了那位畫家職涯中的兩個階段。
The castle was rebuilt several times in troubled periods of war.
那座城堡在戰亂時期曾數度重建。
文法句型
periods of history
different periods of + noun
two periods of a career
用法筆記
Usually appears when speakers divide a longer story into named or recognizable stages. Distinguish from noun/1, which can refer to any span of time, even one that has no historical label.
3. separate lesson times in a school day, each usually set aside for one subject or
節課
學校一天中的上課時段
separate lesson times in a school day, each usually set aside for one subject or activity
Students have eight periods on Thursdays, including music after lunch.
學生在星期四有八節課，午飯後還有音樂課。
periods in a daily timetable
The principal shortened morning periods because the gym was flooded.
因為體育館淹水，校長把上午的節課都縮短了。
shorten school periods
Our math teacher combined two periods for the science fair setup.
數學老師把兩節課合併來準備科展布置。
Friday periods end early before the school bus leaves.
星期五的節課會提早結束，好趕上校車。
文法句型
eight periods a day
morning periods
combine two periods
用法筆記
Most common in school talk with numbers or parts of the day, such as first periods or morning periods. Distinguish from noun/6, which refers to sections of a sports game.
4. monthly times when blood leaves the uterus if pregnancy has not happened
月經
每月來潮的經血週期
monthly times when blood leaves the uterus if pregnancy has not happened
The patient's periods became lighter after the doctor changed the medicine.
醫師換藥後，那位病人的月經量變少了。
periods described by pattern or amount
Irregular periods made the teenager miss two swimming practices.
經期不規則讓那名青少年錯過了兩次游泳練習。
irregular periods affecting daily life
The nurse asked how long the heavy periods had lasted.
護理師問經血量多的情況已經持續多久了。
Painful periods kept the chef at home on opening day.
痛經讓那位主廚在開幕當天只能待在家裡。
- cycles
broader word that can include timing, not only bleeding
- menstruation
more formal and medical
文法句型
heavy periods
irregular periods
painful periods
用法筆記
Often appears with words such as heavy, light, painful, or irregular when discussing someone's cycle over time. It is more common in plural than noun/period when speakers mean a general pattern rather than one single month.
5. small round punctuation marks used to end statements and some abbreviations
句點
用來結束句子的標點
small round punctuation marks used to end statements and some abbreviations
American editors add periods after titles like Dr. and Mrs.
美式編輯會在 Dr. 和 Mrs. 這類稱呼後面加上句點。
periods after abbreviations
The teacher circled the missing periods in every short answer.
老師把每個簡答題裡漏掉的句點都圈了起來。
missing periods in writing
Please use periods, not commas, to end those simple sentences.
那些簡單句子請用句點收尾，不要用逗號。
The sign looked messy because the designer mixed spaces and periods.
那塊招牌看起來很亂，因為設計師把空格和句點混著用。
- full stops
the standard British English term
- dots
informal and less precise
文法句型
use periods
missing periods
periods after abbreviations
用法筆記
This is the usual American word for the mark called a full stop in British English. Distinguish from noun/1, where periods means stretches of time rather than punctuation marks.
6. fixed sections of playing time in sports such as ice hockey
節次
球賽進行中的分段時間
fixed sections of playing time in sports such as ice hockey
The home side scored in all three periods of the hockey game.
主隊在那場冰球比賽的三節裡都有得分。
three periods in hockey
Two fast periods gave the crowd plenty to cheer about.
比賽前兩節節奏很快，讓觀眾看得很過癮。
fast periods in a game
The coach praised the team's defense in the final two periods.
教練稱讚球隊在最後兩節的防守。
After scoreless periods, the players won the match in overtime.
前面幾節都沒有得分後，球員們在延長賽贏了比賽。
文法句型
three periods
final two periods
scoreless periods
用法筆記
Most often used in North American sports, especially ice hockey. Distinguish from noun/3, where periods are timetable blocks in a school day rather than parts of a match.
7. lengths of time needed for repeating motions or signals to complete one full cyc
週期
重複運動完成一輪所需時間
lengths of time needed for repeating motions or signals to complete one full cycle
Astronomers compared the periods of the two newly found planets.
天文學家比較了那兩顆新發現行星的週期。
periods of orbiting objects
The lab chart showed longer periods as the waves slowed down.
波浪速度變慢時，實驗圖表顯示週期變長了。
longer periods in wave motion
Different periods in the signal made the machine hard to calibrate.
訊號中的不同週期讓那台機器很難校準。
Students measured the periods of each pendulum during physics class.
學生在物理課上量了每個擺的週期。
文法句型
periods of waves
compare the periods
measure the periods of + noun
用法筆記
This sense belongs to repeated motion, waves, or orbital movement, where one period equals one complete cycle. Distinguish from noun/1, which is any span of time and does not require repetition.