guarantee

n.保修(期)；保证(人或物) vt.保证，担保

grueling, gruelling (US grueling), gruesome, gruesomely, gruesomeness, gruff, gruffly, gruffness, grumble, grumbler, grummet, grumpily, grumpiness, grumpy, grunt, gruyere, gryphon, GT, Guam, guano, guarantee against, guarantor, guaranty, guard, guard against, guard's van, guard-rail, guarded, guardhouse, guardian, guardian angel, guardianship, guardroom, guardsman, Guatemala, guava, gubernatorial, gudgeon, guelder rose, guerrilla,