幸福课是耶鲁大学最受欢迎的课程之一

empirical - adj. based on testing or experience

gratitude - n. a feeling of appreciation or thanks

potential - n. capable of becoming real

prioritize - v. to organize (things) so that the most important thing is done or dealt with first

meditation - n. the act or process of spending time in quiet thought

salary - n. an amount of money that an employee is paid each year

undergraduate - n. a student at a college or university who has not yet earned a degree