定义
to boast: 自夸，炫耀
Kevin often boasts about owning a Mercedes and a BMW.凯文经常炫耀自己有一辆奔驰和宝马。
boastful: 傲慢的，自我膨胀
Without being boastful, I graduated at the top of my class at Oxford.毫不自夸地说，我在牛津是以名列班级前茅的成绩毕业的。
- "These days, boasting about short nights seems more silly than manly, not to mention that anyone still working on Wall Street is lucky to have a job during these tough economic times!"
