You can also go to the Apple Icon located at the left corner of the desktop, go to the App Store, and then click on Featured to get the macOS Sierra option.
ນອກນັ້ນທ່ານຍັງສາມາດໄປໄອຄອນ Apple ຕັ້ງຢູ່ແຈເບື້ອງຊ້າຍຂອງ desktop ໄດ້, ໃຫ້ໄປທີ່ App Store, ແລະຫຼັງຈາກນັ້ນໃຫ້ຄລິກໃສ່ແນະນໍາເພື່ອໃຫ້ໄດ້ຮັບການ MacOS Sierra ທາງເລືອກ.