know what you're talking about

know what you're ˈtalking about(informal)to have knowledge about sth from your own experience亲身经历过；作经验之谈

• French cuff
• townish
• by good fortune
• praedormital
• spindleage
• box seat
• musically
• ADHD
• refreezes
• gitoxigenin
• put oneself to the trouble of
• three-legged race
• service stripes
• tin-plated
• laryngotomies
• mesothoraces
• histogenic
• tutresses
• sulcuss
• antiviruss
• remiss
• gnocchi
• quick-and-dirties
• stepping stones
• burier
• zestfulnesses
• bring away
• Marlowe, Julia
• schefferite
• unthink
• Tachyglossidae
• enlarged edition
• adamantanes
• desert climate
• lenticulation
• dramatic
• concessional
• invoke from
• follow someone's lead
• games consoles
• damnings
• ergastoplasm
• leprophobia
• fixed field
• f.p.a.
• luminous flame
• crapulous
• vinosity
• desert islands
• land of dreams
• Slavonic
• Old Italian
• trail off
• seppukus
• swinging door
• myrosin
• mouldies
• sacrificially
• whipcords
• fire balloon
• bulltongued
• siglum
• vermicularly
• inkstands
• freedom rider
• make out of
• avos
• language of signs
• revolve around/round sb/sth
• arbitrations
• diphthongizations
• past all doubt
• field day
• be up the creek
• hyetograph
• anilinctus
• dutch tilt
• Simla
• Olympic mascot
• simlas
• mousy
• temblors
• transporter
• FIFO queuing
• Taylor
• sweetsop
• driving chuck
• shadinesses
• downsizing
• phantasied
• Fukuoka
• crimper-trimmer
• liquefactive
• Fabian, Saint
• phantom limbs
• sticky fingers
• size effect
• dynamic subroutine
• pled
• doctrine of infallibility