gang

(informal) a group of friends who meet regularly一伙（經(jīng)常聚在一起的朋友）

intense

If you describe a person as intense, you mean that they appear to concentrate very hard on everything that they do, and they feel and show their emotions in a very extreme way. 熱情的;熱切的;激動(dòng)的

technically?

according to the exact meaning, facts etc.根據(jù)確切意義地；嚴(yán)格按照事實(shí)地

moxie

courage and determination 勇氣，膽量；決心

since when

?SPOKEN used in questions to show that you are very surprised or angry 從什么時(shí)候起？〔用于問句，表示驚訝或氣憤〕

leap year

A leap year is a year which has 366 days. The extra day is the 29th February. There is a leap year every four years. 閏年