guarantee

pledge, guarantee, assurance

名词 guarantee:

1. a written assurance that some product or service will be provided or will meet certain specifications
   同义词：warrant, warrantee, warranty
2. a pledge that something will happen or that something is true
3. a collateral agreement to answer for the debt of another in case that person defaults
   同义词：guaranty

动词 guarantee:

1. give surety or assume responsibility
   同义词：vouch
2. make certain of
   同义词：ensure, insure, assure, secure
3. promise to do or accomplish
   同义词：undertake
4. stand behind and guarantee the quality, accuracy, or condition of
   同义词：warrant

1. Blue skies are not a guarantee of continuing fine weather.
   蔚蓝的天空不一定担保天气持续晴朗。
2. I guarantee that you'll enjoy yourself.
   我包你玩得痛快。
3. We cannot guarantee the punctual arrival of trains in fogy weather.
   雾天我们不能保证火车准时到达。
4. This radio has a two-year guarantee.
   这台收音机保修两年。
5. South winds in winter are a guarantee of rain in these parts.
   在这一带，冬天刮南风是下雨的迹象。

guar.an.tee

n.（名词）
Something that assures a particular outcome or condition:
担保物：保证某一特殊结果或条件的东西：
例句：
Lack of interest is a guarantee of failure.
缺乏兴趣肯定会导致失败

A promise or an assurance, especially one given in writing, that attests to the quality or durability of a product or service.
担保：一种字据或保证，通常为书面的，以保证某种产品或服务的质量或耐用性
A pledge that something will be performed in a specified manner.
保证：对某事将以某种特定方式完成的保证

A guaranty by which one person assumes responsibility for paying another`s debts or fulfilling another`s responsibilities.
抵押品：一种约束某人还债或承担某种责任的抵押品
A guaranty for the execution, completion, or existence of something.
保证物：保证某事的实施完成或存在的物品
A guarantor.
保证人
v.tr.（及物动词）
guar.an.teed,guar.an.tee.ing,guar.an.tees
To assume responsibility for the debt, default, or miscarriage of.
担保：承担债务，违约或计划失败的责任
To assume responsibility for the quality or performance of:
品质保证：承担物品质量或性能的责任：
例句：
guarantee a product.
保证产品的质量

To undertake to do, accomplish, or ensure (something) for another:
承诺，保证：保证为某人去做（某事或获得某物）：
例句：
guaranteed to free the captives; guarantees freedom of speech.
保证释放犯人；保证言论自由

To make certain:
确定，落实：
例句：
The rain guarantees a good crop this year.
这场雨保证了今年有好收成

To furnish security for.
为…提供担保
To express or declare with conviction:
管保：以肯定的态度表示或宣称：
例句：
I guarantee that you`ll like this book.
我管保你会喜欢这本书

来源：
Alteration of Middle English garant [warranty]
中古英语 garant的变化 [担保]
from Old French * see guaranty
源自 古法语 *参见 guaranty