看不見的阻礙
把實體拿掉、只留下「過不去」這個效果：規定、費用、語言、心裡的顧慮，作用跟一道牆一樣。
obstacle · noun · B1
A rule, problem, or difficulty that stops people from doing something, or that limits what they can do.
障礙；阻礙
核心畫面
Picture something standing across your path so that you cannot simply keep walking: a gate, a fence, a line of mountains. Take the physical thing away and keep only its effect — you still cannot get through — and the same word covers rules, costs, and languages, and even a number nobody has managed to beat.
可以想成：有東西橫在你要走的路上，讓你沒辦法就這樣直直走過去——一道閘門、一排柵欄、一列山。把實體的東西拿掉、只留下…更多收起
可以想成：有東西橫在你要走的路上，讓你沒辦法就這樣直直走過去——一道閘門、一排柵欄、一列山。把實體的東西拿掉、只留下它的效果（你還是過不去），同一個字就能拿來講規定、費用、語言，甚至一個至今沒有人突破的數字。From the picture
難以突破的數字
把那道牆立在數線上：某個數字被大家當成極限，跨過去就是大新聞——牆是想像出來的，難度卻是真的。
barrier, record threshold · noun · B2
A number or level, such as ten seconds or 40 percent, that people treat as a limit and find very hard to get past.
（難突破的）關卡；門檻
Also in this word
barrier, fence or gate · noun · A2
A fence or gate that is put in a place to stop people from going in a certain direction.
柵欄；閘門
barrier, natural divide · noun · B1
Something solid, such as a wall, a row of trees, or a line of mountains, that keeps two areas, people, or things apart.
屏障；隔開的東西
原始詞典資料9 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。
Barriername
- 1
A surname from French.
barriernoun/ˈbæɹi.ə/
- 1
A structure that bars passage.
- The bus went through a railway barrier and was hit by a train.
- The bomber had passed through one checkpoint before blowing himself up at a second barrier.
- 2
An obstacle or impediment.
- Even a small fee can be a barrier for some students.
- If there's one thing the history of evolution has taught us is that life will not be contained- life breaks free, it expands to new territories, and it crashes through barriers, painfully, maybe even dangerously but,... uh... well, there it is.
- 3
A boundary or limit.
- Few marathon runners break the three-hour time barrier.
- The downside of normalization is that it erects a defensive barrier between the real world and the perceived i.e. normalized world.
- 4
grammarhuman-scienceslinguisticsA node (in government and binding theory) said to intervene between other nodes A and B if it is a potential governor for B, c-commands B, and does not c-command A.
- 5
medicinephysiologysciencesA separation between two areas of the body where specialized cells allow the entry of certain substances but prevent the entry of others.
- 6
historicalThe lists in a tournament.
- 7
historicalA martial exercise of the 15th and 16th centuries.
barrierverb/ˈbæɹi.ə/
- 1
To block or obstruct with a barrier.
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。