整體切分出的一塊
兩個用法都是同一個畫面：把一個大整體分割成幾塊，sector 就是其中一塊有界線的部分。差別只在被切的整體是經濟還是地理。
industry sector · noun · C1
One part of a country's business or money activity, such as farming, banking, or factories.
部門 / 產業
核心畫面
You can picture a sector as one slice cut out of a larger whole — like one wedge of a pie, or one zone marked off on a big map. The whole thing (a country's economy, a wide battlefield) is divided up, and a sector is one of those marked-off parts, with a clear boundary around it.
可以想成 sector 是從一個大整體裡切出來的一塊——像一整塊派裡的一片，或是大地圖上劃出來的一個區。整體（一國的…更多收起
可以想成 sector 是從一個大整體裡切出來的一塊——像一整塊派裡的一片，或是大地圖上劃出來的一個區。整體（一國的經濟、一片廣闊的戰場）被分割開來，sector 就是其中一塊被劃出來的部分，周圍有清楚的界線圈著它。From the word’s history
From Latin sector, related to secare 'to cut'. The root sense of 'a cut-off portion' (as in a geometric sector of a circle) still underlies every modern use.
源自拉丁文 sector，與 secare（切割）同源。「切下來的一塊」這個本義（就像幾何裡圓的「扇形」），到今天每個用法底下都還在。
Online Etymology Dictionary (etymonline.com), entry 'sector'
One branch
原始詞典資料14 筆記錄
以下是外部詞典記錄的用法，原文照列，我們還沒有寫成教學內容。上面的說明才是我們自己寫的；有些用法可能上面已經講過了。
sectornoun/ˈsɛk.təɹ/
- 1
A section.
- 2
aeronauticsaerospaceaviationIn the schedule for an aircraft and its crew, the period starting with preparation of the plane before loading at one airport and ending with deplaning at the next.
- 3
governmentmilitarypoliticsA zone; a designated area.
- 4
governmentmilitarypoliticsA zone; a designated area.
- 5
literaturemediapublishingA zone; a designated area.
- 6
A zone; a designated area.
- Shireroth shall not recognize the use of Sectors^([sic]) as a micronational geographic or cultural subdivision. Nor shall it reside in any sector. Nor shall any duchy or territory be considered a part of ANY sector unless the Duchy or Territory expressly grants permision^([sic]) to be considered in such sector.
- I'll also provide a list of all active citizens, I understand that in the past this has been hard due to lack of updates of the necessary links but as someone said not so long ago the CIS sector is in more of a flux than other sectors - bar Lovely 😉
- 7
geometrymathematicssciencesPart of a circle, extending to the center; circular sector.
- 8
geometrymathematicssciencesA portion of a sphere or ball defined by a conical boundary with apex at the center of the sphere.
另外 6 個記錄的用法
- 9
computer-hardwarecomputingengineeringA fixed-sized unit (traditionally 512 bytes) of sequential data stored on a track of a digital medium.
- 10
An instrument consisting of two rulers of equal length joined by a hinge.
- 11
A field of economic activity.
- Seeing the British establishment struggle with the financial sector is like watching an alcoholic who still resists the idea that something drastic needs to happen for him to turn his life around. Until 2008 there was denial over what finance had become. When a series of bank failures made this impossible, there was widespread anger, leading to the public humiliation of symbolic figures.
- public sector; private sector
- 12
engineeringnatural-sciencesphysical-sciencesA toothed gear whose face is the arc of a circle.
- 13
hobbieslifestylemotor-racingA fixed, continuous section of the track, such that sectors do not overlap but all sectors make up the whole track.
- 14
climbinghobbieslifestyleAn area of a crag, consisting of various routes
資料來源：英文維基詞典 English Wiktionary（CC BY-SA 4.0）。 原文照列，未經改寫。