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costly + noun
costly 作定语修饰名词，表示“代价高的”。
They made a costly mistake.
他们犯了一个代价高昂的错误。
昂贵的；价格高的
先理解核心含义，再看它在真实句子里的用法。
昂贵的；价格高的
Having a high price; expensive.
They made a costly mistake.
他们犯了一个代价高昂的错误。
昂贵的；价格高的。
Of high cost; expensive.
造成重大损失或牺牲
entailing great loss or sacrifice
价格高昂
having a high price
Buying a house in the city center can be very costly.
在市中心买房子可能非常昂贵。
AI contextual example
The costly mistake set the project back several weeks.
那个代价高昂的错误使项目推迟了好几周。
AI contextual example
She wore a costly diamond necklace to the party.
她戴着一条昂贵的钻石项链去参加派对。
AI contextual example
costly jewelry
贵重的珠宝
WordNet
costly 作定语修饰名词，表示“代价高的”。
They made a costly mistake.
他们犯了一个代价高昂的错误。
costly 作表语，描述主语的花费大。
The renovation was costly.
翻修费用很高。
不定式结构表示在某个方面代价高。
The equipment is costly to maintain.
维护这台设备费用很高。
Not this
This watch costly me $500.
Use this
This watch cost me $500.
costly 是形容词，不能作动词。表示‘花费金钱’应使用动词 cost。
Not this
The price of this car is very costly.
Use this
The price of this car is very high.
costly 本身已包含‘价格高’的意思，因此‘price is costly’语义重复。应改为‘price is high’或直接说‘The car is costly。’
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
代价高昂的错误
Not checking the facts was a costly mistake.
没有核实事实是一个代价高昂的错误。
代价高昂的失误
The software bug led to a costly error in the financial report.
这个软件漏洞导致了财务报告中的一个代价高昂的失误。
代价高昂的失败
The project turned into a costly failure due to poor planning.
由于规划不善，该项目变成了一场代价高昂的失败。
代价高昂的延误
Delays in construction resulted in costly penalties.
施工延误导致了代价高昂的罚款。
代价高昂的诉讼
The company avoided costly litigation by settling out of court.
该公司通过庭外和解避免了代价高昂的诉讼。
代价高昂的决定
Choosing the wrong supplier was a costly decision for the business.
选择错误的供应商对企业来说是一个代价高昂的决定。
你的衣着应当昂贵，与你的钱包相称。
From Shakespeare's Hamlet, Act 1, Scene 3, Polonius's advice to Laertes.
出自莎士比亚《哈姆雷特》第一幕第三场，波洛涅斯对雷欧提斯的忠告。
Use costly naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
cost花费 + ly后缀，记住'花费巨大，代价高昂'。
通常用于描述商品、服务或生活成本的高昂价格，多见于商业、购物或经济讨论中。
常与介词 for 或 to 连用；可用于‘it is costly to...’句式。
Dictionary facts from DICTIONARY_API_DEV, ECDICT, WIKTIONARY.