“保修卡”常见的英文表达是 warranty card 。其中,“warranty”有“保修;保证;担保”之意 ,“card”表示“卡片”,二者组合就清晰传达了“保修卡”的含义。
例如:Please keep the warranty card carefully in case you need it for after-sales service.(请妥善保管保修卡,以防您售后维修时需要用到它。)