mindmap root((任务)) task implies usually a specific piece of work imposed by a person in authority or by circumstance: performed a variety of ~s for the company. duty implies an obligation to perform or a responsibility for performance: the ~ies of a lifeguard. job applies to a piece of work voluntarily performed or to an assigned bit of menial work and may sometimes suggest difficulty or importance: took on the ~ of turning the company around. chore implies a minor routine activity necessary for maintaining a household or farm and may stress the drabness of such activity: every child had a list of ~s to do. stint implies a carefully allotted or measured quantity of assigned work or service: during his ~ as governor. assignment implies a definite limited task assigned by one in authority: your ~ did not include interfering with others.