事业;责任，义务
venture
“冒险事业;投机活动”，强调风险性
to take a ~ in oil 在石油业进行一次投机
mission
○1“使命;天职”，多指一生都在履行的职责
○2指被派遣人员领受的任务或太空飞行任务
○1Her ~ in life was to work with the homeless.她以帮助无家可归者为己任。
○2to be sent to London on a diplomatic ~肩负外交使命被派往伦敦;a US space ~美国的太空飞行
responsibility
“责任;负责”，强调承担后果
It is their ~ to ensure that the rules are enforced.他们有责任确保制度的执行。
duty
多指道义上的责任，强调自觉性
Local councilors have a ~ to serve the community.地方议员有义务为社区服务。
obligation
指合同或法律上规定的义务，强调约束力
They reminded him of his contractual ~s.他们提醒他注意合同规定的义务。
[考研试题](1992)When it has accomplished its ____, it can be ready for another trip in about two weeks.航天飞机在完成任务后就可以准备开始两周后的旅程。(B)
[A] venture [B]mission [C] commission [D] responsibility
profession, occupation, career，job，work，trade，vocation，employment 工作;职业
profession
指需要经过专门学习和大量训练的法律、医学、教育等脑力劳动方面的职业
the ~s of law, medicine, and engineering 法律、医学和工程职业
occupation
“工作，职业”，是正式或书面用语。 He has no fixed ~.他没有固定职业。
career
指希望终身从事的事业、生涯，强调工作经历或事业上取得成就的一系列工作
an officer with a distinguished ~有着卓越成就的军官
job
指能够提供稳定报酬的工作，作可数名词
She took a ~ as a waitress.她找了个工作，当服务员。
