with it
adjective uk/ˈwɪð ˌɪt/ us/ˈwɪð ˌɪt/
(FASHION)
old-fashioned informal追求时尚的，赶时髦的
knowing a lot about new ideas and fashions
He reads all the style magazines and thinks he's really with it. 他阅读所有的时尚杂志并认为自己真的很时髦。
informal时尚的，时髦的
fashionable
(MIND)
be with itinformal 机敏，有头脑
to be able to think or understand quickly
You're not really with it today, are you? 你今天有点迟钝，是不是？