內容涵蓋得很廣
同樣的「伸得遠」用在內容上：談到的題目多、細節深，讀起來像走了很長一段路。
detailed, thorough · adjective · B2
Dealing with or containing a lot of information, details, or subjects.
廣泛的／詳盡的
核心畫面
Picture something that keeps going further than you expected — grounds that stretch past the treeline, damage that turns out to run through the whole building. The word is about reach. Point it at a report or a person's knowledge and the reach becomes how much ground the content covers.
可以想成：一樣東西延伸得比你以為的還遠——莊園的地一路過了樹林，或是損壞查下去發現整棟樓都有。這個字談的是「伸得多遠…更多收起
可以想成：一樣東西延伸得比你以為的還遠——莊園的地一路過了樹林，或是損壞查下去發現整棟樓都有。這個字談的是「伸得多遠」。把它指向一份報告或一個人的學識，那個「遠」就變成內容涵蓋了多少範圍。From the picture
Also in this word
very large, wide · adjective · B2
Very large in size, amount, or degree, and covering a big area.
廣大的／大量的
原始詞典資料4 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。
extensiveadj/ɪkˈstɛn.sɪv/
- 1
Having a great extent; covering a large area; vast.
- In the second century of the Christian era, the Empire of Rome comprehended the fairest part of the earth, and the most civilised portion of mankind. The frontiers of that extensive monarchy were guarded by ancient renown and disciplined valour.
- 2
Considerable in amount.
- I have done extensive research on the subject.
- 3
Serving to extend or lengthen; characterized by extension.
- For station is properly no rest, but one kind of motion, relating unto that which physicians (from Galen) do name extensive or tonical; that is, an extension of the muscles and organs of motion, maintaining the body at length, or in its proper figure.
- 4
natural-sciencesphysical-sciencesphysicsHaving a combined system entropy that equals the sum of the entropies of the independent systems.
- According to Tsallis (1988), the entropy was extensive for T = 1, superextensive for t < 1 and subextensive for t > 1.
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。