1. I also very frustrated, if sadness without end. 我也很失落，如果说悲伤没有尽头。
2. He ha***een frustrated for some time with the tense situation at Chelsea, and particularly the perceived interference of Abramovich in team affairs. 他已经有一段时间为了切尔西内部的紧张情况感到失落了，尤其是感到阿布对球队事物的干涉。
3. Some people think that examinations can help them review the lessons regularly, while others maintain that too many examinations have frustrated them. 一些人认为，考试可以帮助他们定期回顾课程，而另一些人则认为太多的考试会使人有挫折感。
