/dɪ'sɛmb(ə)l/ v. Syn. disguise; pretend (伪装,做作,掩饰) disguise or conceal behind a false appearance; make a false show of Even though John tried to dissemble his motive for taking modern dance, we all knew he was there not to dance but to meet girls.
/ɪs'tʃu:/ v. Syn. avoid; escape (避免) avoid; refuse to use or participate in; stand aloof from Hoping to present himself to his girlfriend as a totally reformed character, he tried to eschew all the vices, especially chewing tobacco and drinking bathtub gin.
/mɜrkjʊərɪəl/ a. Syn. capricious (善变的,无常的) capricious; liable to sudden unpredictable change; quick and changeable in temperament Quick as quicksilver to change, he was mercurial in nature and therefore unreliable.