6. Work Towards

To work towards is to make an effort with the intention of achieving a future objective. (ex: The marathon runner woke up at 5 am every day as he worked toward his goal of running under 3:00 for the 42 km marathon.)

意思是，特意地花精力去实现将来的某些目标（例如：那个马拉松运动员，每天早上5点醒来，朝着在三小时内跑完42千米的目标奋进。）

7. Work Off

To work off means to pay somebody with work to compensate for money owed (or any other type of debt.) You can also work something off with physical activity (stress, excess weight). (ex: The kid didn’t have money to pay for his meal, so the restaurant owner let him work it off by washing dishes for an hour).

这个短语的意思是通过为某人工作来还钱（或其他任何类型的债务）。你也可以用一些生理活动来偿还解决（如缓解压力，解决体重超重）（例如：那个小孩儿没有钱为他的食物买单，所以那个餐厅让他洗一个小时碟子还债。）

8. Work In

To work something in means to consciously include integrate something. (ex: He said he was too busy to exercise, but I convinced him to work in a few sessions at the gym.)

这个短语的意思是，有意地包括某样东西。（例如，他说他太忙没时间健身，我说服他安排了些时间在健身房锻炼。）