Idiom: "as a matter of fact"
Definition:
in fact; actually
Examples:
1) As a matter of fact, Sarah did buy that dress even though she thought it was too expensive.
2) As a matter of fact, you can start the job right away.
中文解释： http://www.youzienglish.com/main/idiom_of_the_day/as_a_matter_of_fact/cn/
