1
under warranty
表示在保修期内，常与be动词连用。
The product is still under warranty.
该产品仍在保修期内。
担保，保证书
warranties — plural of warranty
先理解核心含义，再看它在真实句子里的用法。
担保，保证书
a written assurance that a product or service will be provided or meet certain specifications
The product is still under warranty.
该产品仍在保修期内。
保证某一结果或义务将被履行的保证；安全。
A guarantee that a certain outcome or obligation will be fulfilled; security.
保证产品或服务将提供或符合特定规格的书面承诺
a written assurance that some product or service will be provided or will meet certain specifications
法律协议,书面或口头,或通过买卖双方的行为暗示,声明所涉及的商品或财产将处于承诺的状态。
A legal agreement, either written or oral (an expressed warranty) or implied through the actions of the buyer and seller (an implied warranty), which states that the goods or property in question will be in exactly the same state as promised, such as in a sale of an item or piece of real estate.
通常在固定期限内提供给购买产品或物品的人的书面保证,声明在损坏或缺陷情况下将免费提供某些维修和/或更换零件。
A written guarantee, usually over a fixed period, provided to someone who buys a product or item, which states that certain repairs and/or replacement parts will be provided free of charge in case of damage or a defect.
The laptop comes with a one-year warranty.
这台笔记本电脑附带一年的保修期。
My phone's screen cracked, but it's still under warranty.
我的手机屏幕碎了，但还在保修期内。
The company offers a five-year warranty on all their appliances.
这家公司对所有电器提供五年保修。
表示在保修期内，常与be动词连用。
The product is still under warranty.
该产品仍在保修期内。
表示对某物的保修，介词用on。
They offer a two-year warranty on all electronics.
他们为所有电子产品提供两年保修。
表示保修期到期，主语为warranty。
The warranty expires next month.
保修期下个月到期。
表示保修涵盖的范围，常用否定形式。
This warranty does not cover accidental damage.
本保修不包括意外损坏。
Not this
The store warranties the product for one year.
Use this
The store warrants the product for one year.
错误：将warranty当作动词使用。warranty是名词，意为“保修”；动词形式是warrant。
Not this
The product is in warranty.
Use this
The product is under warranty.
错误：介词使用不当。固定搭配为under warranty，表示“在保修期内”。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
在保修期内
The laptop is still under warranty.
这台笔记本电脑仍在保修期内。
保修期
The warranty period is two years.
保修期是两年。
保修索赔
You need to file a warranty claim.
你需要提出保修索赔。
延长保修
I bought an extended warranty for my phone.
我为手机购买了延长保修。
保修卡
Keep the warranty card in a safe place.
把保修卡放在安全的地方。
有限保修
The product comes with a limited warranty.
该产品附带有限保修。
在保修期内
The laptop is still under warranty, so the repair is free.
这台笔记本电脑仍在保修期内，所以维修是免费的。
附有保修
I always buy electronics with a warranty to avoid unexpected costs.
我总是购买附有保修的电子产品，以避免意外费用。
无保修
The seller sold the car 'as is' without any warranty.
卖家按现状出售该车，不提供任何保修。
Use warranties naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
联想：战争（war）中需要保证书（warranty）来确保安全。
语域：formal 常见场景：commercial、legal、product documentation 通常用于商业合同、产品质保书等正式书面场景，比较常见于法律和商务领域。
常与on或under连用，例如：a warranty on the product, under warranty
Dictionary facts from DICTIONARY_API_DEV, ECDICT, WIKTIONARY.