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重点讲解：
1. catch up with 捕获；擒获；捉拿到；
He is always fooling around in class, but the teacher will catch up with him some day.
他总是在班上捉弄人，总有一天老师会抓住他的。
2. take advantage of 利用；
I want to take advantage of your lifetime of scholarship.
我希望能够用到您一生的学识。
3. all told 总共；合计；总之；
All told there were 104 people on the payroll.
在职的总共有 104 人。
4. pay attention to 关心；注意；
In doing our work, we must pay attention to ways and means.
做工作应注意方式方法。
adj. 职业的，专业的，专门的
n. 专业人
