assignment
n
1 [C] task or duty that is assigned to sb 指定给某人的任务或职责
Your next assignment will be to find these missing persons. 你的下一项任务是寻找这些失踪的人.
She was sent abroad on a difficult assignment. 她被派出国执行一项艰巨任务.
2 [U] act of assigning (esp property, rights, etc) 转让（尤指财产, 权利等）
a deed of assignment 转让契约.