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fieldworks + be + past participle
作‘野战工事’解时，fieldwork 可数，常用复数；作主语时谓语用复数。
The fieldworks were abandoned after the battle.
战斗结束后，这些野战工事被弃守了。
野战工事
先理解核心含义，再看它在真实句子里的用法。
野战工事
a temporary fortification built by troops in the field
The fieldworks were abandoned after the battle.
战斗结束后，这些野战工事被弃守了。
在田间进行的工作,与农场其他地方(如谷仓、房屋、附属建筑、办公室)的工作相对。
Work done out in the fields as opposed to that done elsewhere on the farm (e.g., barn, house, outbuildings, office).
在现实世界而非受控条件下进行的工作。
Work done out in the real world rather than in controlled conditions.
在实地收集原始数据。
The collection of raw data in the field.
The troops built a fieldwork on the hill to defend the bridge.
部队在山上构筑了一座野战工事来保卫桥梁。
Historians found the remains of old fieldworks near the river.
历史学家在河边发现了旧野战工事的遗迹。
During the night exercise, each squad practiced building fieldworks in the forest.
夜间演习中，每个班都在森林里练习构筑野战工事。
作‘野战工事’解时，fieldwork 可数，常用复数；作主语时谓语用复数。
The fieldworks were abandoned after the battle.
战斗结束后，这些野战工事被弃守了。
They built fieldworks along the border.
他们沿着边界修建了野战工事。
The soldiers took cover behind the fieldworks.
士兵们在野战工事后面躲避。
Not this
I made fieldwork in the countryside last year.
Use this
I did fieldwork in the countryside last year.
汉语的“做”在表达从事某项活动时，英语通常用 do 而非 make；fieldwork 是名词，正确搭配为 do/conduct fieldwork，make fieldwork 属直译错误。
Not this
I have done many fieldworks this year.
Use this
I have done a lot of fieldwork this year.
fieldwork 表示“实地调查”时是不可数名词，不能用复数，也不能用 many；应使用 much/a lot of 修饰。fieldworks 只在军事义“野战工事”中用作复数。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
仓促修筑野战工事
The defenders threw up fieldworks as the enemy approached.
敌军逼近时，守军仓促修筑了野战工事。
构筑野战工事
The engineers were ordered to construct fieldworks around the camp.
工兵奉命在营地周围构筑野战工事。
防御野战工事
The army strengthened its defensive fieldworks before the siege.
在围攻之前，军队加强了防御野战工事。
据守野战工事
The soldiers manned the fieldworks through the night.
士兵们整夜据守野战工事。
临时野战工事
Temporary fieldworks were erected to hold the line until reinforcements arrived.
他们构筑临时野战工事，坚守防线直到援军到达。
Use fieldwork naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
记忆联想：想象士兵在野外(field)挖土施工(work)搭建临时防御工事——野战工事就是战场上的临时防御建筑。
语域：formal 常见场景：军事、战争史、战术讨论 表示“野战工事”时，该词多用于军事、战争史或战术讨论等较正式语境，日常口语中较少使用。
fieldwork 中 -work 的读音为 /wɜːk/，与 work、homework、teamwork、firework、network 的结尾完全一致，构成押韵；fieldwork 开头的 field 也与 field 读音相同，均为 /fiːld/。注意拼写陷阱：field 中的 ie 读 /iː/，而 friend 中的 ie 读 /e/，两者发音不同。
Dictionary facts from ECDICT, WIKTIONARY.