1. make a dent in 取得进展
We worked all day and still didn't make a dent in this paperwork.
我们工作了一整天，但这项文书作业仍没有进展3qf7hfsoI)5I。

2. call on sb. to 要求某人做某事
They also call on them to provide the treatment to developing nations.
他们还要求他们将治疗方法分享给发展中国家VMT)kYpxhk0gWcJZVAm。

3. wear thin 消磨；逐渐消失
His patience began to wear thin during the long wait.
在长期的等待中，他的耐性慢慢消失了+Osv;rW..X7SJRIy。

4. stave off 避免
Though there were failures, too, it seemed as if good management could stave off the tragedy.
虽然也有一些失败的例子，但是看起来好的管理是可以避免悲剧发生的wq|0hS61,B(。