人质作为保证的人 a hostage ; A person serving as security

为保密起见 for regent

为保险起见 For insurance purposes ; security measure ; For insurance reasons

为保持 maintain for ; keep for

为保持健康 to keep healthy ; To Keep Themselves Fit

为保证 In order to ensure ; To ensure ; In order to guarantee

也称为保证金 Leverage

称为保守型证券 defensive security

为保障阁下密封 Scelle pour votre protection ; sealed for your protection

为保持健康而锻炼 exercise to keep fit