The land itself, thought of as a surface you have to cross — how flat or steep it is, how rough, how hard to walk or drive over.

The land itself土地本身 thought of as a surface被想成一個表面 you have to cross你必須跨越 how flat or steep it is它有多平或多陡 how rough有多崎嶇 how hard to walk or drive over走過或開車過去有多困難

When you say 'rocky terrain', 'mountainous terrain', 'flat open terrain', you are not describing a view. You are describing what the ground will do to you. That is what separates 'terrain' from 'land' or 'ground' or 'scenery'.

When you say當你說 'rocky terrain'「rocky terrain」 'mountainous terrain'「mountainous terrain」 'flat open terrain'「flat open terrain」 you are not describing你不是在描述 a view一個景色 you are describing你是在描述 what the ground will do to you這塊地會對你造成什麼影響 that is what separates這就是...的差別 'terrain'terrain from 'land' or 'ground' or 'scenery'跟land、ground、scenery

Soldiers, hikers, cyclists, geologists, and rescue teams all use it, because for them the shape of the ground decides everything: 'the terrain is too steep for vehicles', 'they trained on difficult terrain'.

Soldiers, hikers, cyclists, geologists, and rescue teams軍人、健行者、自行車騎士、地質學家、救難隊 all use it都會用這個詞 because因為 for them對他們來說 the shape of the ground地形的樣子 decides everything決定了一切 'the terrain is too steep for vehicles'「the terrain is too steep for vehicles」 'they trained on difficult terrain'「they trained on difficult terrain」

It is a slightly technical, practical word. It is usually uncountable — 'the terrain was rough', not 'a terrain'. You can say 'a type of terrain' or 'different terrains' when you are sorting the world into kinds, but that is the exception.

It is它是 a slightly technical, practical word一個稍微技術性、實用取向的詞 it is usually uncountable它通常不可數 'the terrain was rough'「the terrain was rough」 not不會說 'a terrain'「a terrain」 you can say你可以說 'a type of terrain'「a type of terrain」 or或 'different terrains'「different terrains」 when you are sorting the world into kinds當你在把世界分類的時候 but that is the exception不過那是例外

English also uses it for ideas. 'Familiar terrain' means a subject you know well; 'this is dangerous terrain' in a conversation means a topic where you could easily get into trouble. That picture — an argument as a landscape you move through — is very common in writing and speech, and once you notice it you will see it everywhere.

English英文 also uses it也把這個詞用 for ideas在想法上 'familiar terrain'「familiar terrain」 means指的是 a subject you know well你熟悉的主題 'this is dangerous terrain'「this is dangerous terrain」 in a conversation在對話中 means指的是 a topic where you could easily get into trouble一個很容易讓你惹上麻煩的話題 that picture那個畫面 an argument as a landscape you move through把論點想成一片你要穿越的地景 is very common in writing and speech在寫作和口說裡很常見 and而且 once you notice it一旦你注意到它 you will see it everywhere你會到處都看到它