:保证书的英文怎么说

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　　Letter of Quality Guarantee

　　质量保证书;质保书

　　Letter of hypothecation

　　押汇负责书,押汇保证书

　　Ex-drinkers who have taken the pledge.

　　已作出保证书的戒酒者

　　Bonds to pay were treated as negotiable.

　　付款保证书被认为是可以转让的。

　　An honest man's word is his bond.

　　老实人说的话就是他的保证书。

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