Idiom: "(to be) stressed out"
Definition:
very anxious
Examples:
1) Sam was so stressed out because he didn’t start writing his two papers until the day before they were due.
2) You look so stressed out. Maybe you should go take a vacation.
中文解释：http://www.youzienglish.com/main/idiom_of_the_day/to_be_stressed_out/cn/
