- 1
The sidelines are the lines marking the side edges of a sports field, and by extension, the area where coaches, substitutes, and other non-playing people stand and watch. From there comes the common figurative meaning: to be 'on the sidelines' is to be watching something happen without taking part in it yourself — you might feel sidelined at work if decisions are made without you.
The sidelinesThe sidelines are the lines marking the side edges of a sports field是標示運動場地邊界的那些線, and而且 by extension引申開來也指 the area where coaches, substitutes, and other non-playing people stand and watch教練、替補球員和其他不下場的人站著看比賽的那塊區域. From there comes the common figurative meaning從這裡衍生出常見的比喻意思: to be 'on the sidelines'on the sidelines is to be watching something happen without taking part in it yourself是指在旁邊看事情發生、自己沒有參與其中 — you might feel sidelined at work if decisions are made without you如果決定都是別人做的、沒有你的份你可能會覺得sidelined
As a verb, to sideline someone means to stop them from taking part, often because of injury or a decision by someone in charge ('the injury sidelined him for the season').
As a verb當動詞用的時候, to sideline someone means to stop them from taking partto sideline someone指的是讓某人沒辦法參與, often because of injury or a decision by someone in charge通常是因為受傷或是主管的人做的決定 ('the injury sidelined him for the season')（像the injury sidelined him for the season）
Separately, a sideline can also mean a smaller job or business you do alongside your main one ('she runs a small jewelry sideline besides her day job').
Separately另外, a sideline can also mean a smaller job or business you do alongside your main onea sideline也可以指你在正職之外做的比較小的工作或生意 ('she runs a small jewelry sideline besides her day job')（像she runs a small jewelry sideline besides her day job）
組成side + line.
原始詞典資料10 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。
sidelinenoun/ˈsaɪdlaɪn/
- 1
A line at the side of something.
- Like most other fishes, the dragonet varies slightly in colour in different individuals, and at different seasons of the year. Mr. Pennant describes the pupils of the eyes to be of a rich sapphirine blue; the irides fine fiery carbuncle; the pectoral fins light brown; the side-line straight; the colours of the fish yellow, blue, and white, making a beautiful appearance when fresh taken.
- 2
Something that is additional or extra or that exists around the edges or margins of a main item.
- She started the business as a sideline to her regular work and it ended up becoming the greater source of income.
- Soup need not be just a sideline to a meal; if you like, it can be the main course.
- 3
A line for hobbling an animal by connecting the fore and the hind feet of the same side.
- 4
hobbieslifestylesportsA line defining the side boundary of a playing field. Used in Canadian football, field lacrosse and basketball.
- 5
hobbieslifestylesportsThe area outside the playing field beyond each sideline.
- The coach stood on the sidelines and bellowed commands at the team.
- 6
The outside or perimeter of any activity.
- to relegate to the sidelines
- She installed the whole fixture while he simply watched from the sidelines.
- 7
A secondary road, especially a byroad at right angles to a main road.
- 8
A side hustle.
sidelineverb/ˈsaɪdlaɪn/
- 1
hobbieslifestylesportsTo place on the sidelines; to bench or to keep someone out of play.
- The coach sidelined the player until he regained his strength.
- Gomez got his chance with Gary Cahill sidelined and took it superbly with an assured performance as part of a three-man defence Southgate now looks certain to use at the World Cup.
- 2
To remove or keep out of circulation or out of the focus.
- The illness sidelined him for weeks.
- Subplots that might have been fun to explore were relegated or eventually sidelined altogether in the case of characters like Gendry, who disappeared for years and finally resurfaces as a blacksmith in King’s Landing, literally waiting for the call to his hero’s journey.
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。