2019-2-27 每日一词

1）翻译下面的句子：

对很难关注的用户来说，这款强大的应用可以极大的提高工作效率

This powerful app will significantly boost the productivity of people who find it is hard to stay focus.

2）结合自己的生活、学习、工作、兴趣等，想象在什么语境下会用到这个表达。先简要描述这个场景，再造句。

He wishes to boost his confidence for the public speech by that course.