书柜: bookcase...
消沉: depressed, bad mood, low spirit...
挂钩: hook (on which to hang sth), to couple, to link together, to establish contact with, hook, coupling links (e.g. between two railway coaches)...
挠: to scratch, to thwart, to yield...
封建: system of enfeoffment, feudalism, feudal, feudalistic...
跑步: to run, to jog, (military) to march at the double...
有利: advantageous, to have advantages, favorable...
