重点讲解:
1. in an effort to 努力想;试图要
The company has laid off 150 workers in an effort to save money.
公司为节省资金遣散了150名工作人员
。2. keep up with 赶得上;和...保持联系
She did not bother to keep up with the news.
她不愿操心去了解新闻
。3. free up 空出来;腾出来
The government has promised to free up more resources for education.
政府保证调拨更多资源用于教育
。4. In addition to 除了...之外
In addition to headaches, you may develop stomach ulcers as well.
除了头痛,你还可能患上胃溃疡
。