是 warranty 吧？
保证,担保书,担保
以下供参考：
warranty
n.
pl. war.ran.ties;
【复数】 war.ran.ties;
Official authorization, sanction, or warrant.
授权，批准官方授权、批准或认可
Justification or valid grounds for an act or a course of action.
依据为某一行为或某项事业提供支持证明其有效之事（物、言辞等）
Law
【法律】
An assurance by the seller of property that the goods or property are as represented or will be as promised.
保证货物卖主所作的货物同样品无差别或与许诺相同的保证
The insured's guarantee that the facts are as stated in reference to an insurance risk or that specified conditions will be fulfilled to keep the contract effective.
合同担保关于被保的风险如实或为保证合同有效而设立的条件将全部执行的保证
A covenant by which the seller of land binds himself or herself and his or her heirs to defend the security of the estate conveyed.
地产契约土地卖主作出的他（她）本人及他（她）的继承人受法律约束以保护转让地产的安全契约
A judicial writ; a warrant.
法庭书面状；委任状
A guarantee given to the purchaser by a company stating that a product is reliable and free from known defects and that the seller will, without charge, repair or replace defective parts within a given time limit and under certain conditions.
保修证书公司给予买者的一种证明书，写明某产品质量可靠，如有损坏，卖主在一定期限内和一定条件下将免费维修或更换损坏的故障部分
Middle English warantie
中古英语 warantie
fromOld North French,from feminine past participle of warantir[ to guarantee ]
源自古法国北方方言, 源自warantir的阴性过去分词[ 担保 ]
from warant[ warrant ]
源自 warant[ 保证 ]
*See Also : wer-4 In Appendix
warranty
[5wCrEnti]
n.
保证(书)
根据, 理由
授权[批准](证)
【律】(商品等的)保单
warranty deed
【律】(房地产)担保契约
exceptive warranty
例外保证
express warranty
货品质量保证
extended warranty
延长的保证期
guaranteed warranty
保单
implied warranty
内在保证
long-term warranty
长期保单
product warranty
产品质量保证书
sailing warranty
航行特款
short-time warranty
短期保单
trading warranty
遵守船舶装运货物种类规定的保证
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