concrete a.具体的,如concrete operations 具体操作. concrete thinking具体思维. n.具体物,如mushy concrete 稀三和土.to know in the concrete体验.specific a.特别具有的,如specific medicine特效药. specific duty 特种税, specific heat比热.particular a.特有的,稀有的,n.嗜好.如,a particular day一个特殊日子. He is very particular about cigarette香烟是他的嗜好.。