1. 签名背面：indoors 在户内 | indorse 签名背面 | indorsee 被背书人

2. 保证：indoor 室内的 | indorse 保证 | indorse 背书(在票据背面签字

3. 背书(在票据背面签字：indorse 保证 | indorse 背书(在票据背面签字 | indorsee 背书人

4. 背书：519indoorsadv.在屋里;进入室内 | 520indorse背书 | 521indubitableadj. 不容置疑的

verb

1. sign as evidence of legal transfer

e.g. endorse cheques

Synonym: endorse

2. guarantee as meeting a certain standard

e.g. certified grade AAA meat

Synonym: certifyendorse

3. be behind
approve of

e.g. He plumped for the Labor Party
I backed Kennedy in 1960

Synonym: backendorseplump forplunk forsupport

4. give support or one's approval to

e.g. I'll second that motion
I can't back this plan
endorse a new project

Synonym: secondbackendorse