tóu zī zhě / mǎi rù / zhài quàn / shí / zhī fù / de / jià gé / kě néng / gāo yú / huò / dī yú / piào miàn zhí投资者买入债券时,支付的价格可能高于或低于票面值。When investors buy a bond, the price they pay may be higher or lower than its par value.