Per-digit arithmetic — computing sum and carry for each pair
Reasons that families have given for blocking donations have included not knowing what the patient would have wanted, feeling the process took too long, not wanting any further surgery to the body or being against religious and cultural beliefs.
，这一点在safew官方版本下载中也有详细论述
type=tar,dest=./out.tar — export as a tarball
Овечкин продлил безголевую серию в составе Вашингтона09:40
With her hands steady at the controls, her voice calm as she spoke to mission control, Collins piloted the craft through a slow, graceful somersault. With the shuttle's underside now visible, the damage was quickly spotted - and a spacewalk was carried out to repair it.