His pain is past now.（英译中)

His pulse is not very regular.（英译中)

His father is a customs officer.（英译中)

He is writing a letter now.（英译中)

His baby is six months old.（英译中)

His brother is my classmate.（英译中)

Flu is an infectious disease characterized by fever, aches and pains and exhaustion.（英译中)