the genuine or original thing
真正的或原始的东西 (zhēnzhèng de huò yuánshǐ de dōngxī)
"This painting is the real McCoy, not a copy."
"这幅画是zhe real McCoy,不是一副复制品。" (zhè fú huà shì **zhe real McCoy**, bù shì yī fú fùzhìpǐn.)
to stay motivated and passionate about something
to begin again without any advantage or preparation
to support or defend someone
to stop being angry and not remember someone’s mistake
to end up in a particular situation
to achieve something very difficult