reticent: in the habit of saying little
reverberate be sent back, again and again
rigor: sternness, strictness, severe conditions
rotundity: state of being round
salvage: the saving of property from loss
scattered: not situated together
shatter: to break into many pieces
shunned: avoided, kept away from
sketchy: shortly, roughly, quickly
sporadic: happening from time to time
stifled: suppressed, kept back
strive: to make great efforts, to struggle
subsequent: following
succumb: yield, die
taciturn: unspoken, silent
tantalize: raise hopes that cannot be realized
tentative: uncertain, probable
torpid: dull and slow
treacherous not to be trusted, perfidious
tremor: thrill
tyro: a beginner
uproar: noise and excitement
vanity: a foolish pride
vehemence: forcefulness; intensity; conviction
vigilance: watchfulness
vindicate: prove the truth
voluptuous: arousing sensual pleasures
wan: looking ill, not bright
wile: a trick
wrinkle: make small lines (e.g. forehead）