书籍 Face2face - 中高级 - 11 - 11A 单元

to earn an amount of money that enables one to support oneself and pay for one's needs

earning money by working for several different companies rather than being employed by one particular organization

自由职业的, 自由职业者

surpassing what is needed or required, and so, no longer of use

多余的, 过剩的

having no job

to start focusing on and engaging in a task or activity in a serious or determined manner

着手, 专心于

to focus one's effort, time, or attention on something in order to achieve a particular goal

致力于, 专注于

a specific task or undertaking that requires effort to complete

项目, 任务

a lecture or speech given to an audience on a specific subject

讲座, 演讲