熊吃吃哒掌门猫
specialize in 专门研究；专营；专门经营；专攻短语specialize in专营specialize in国营的specialize in sth专注于Specialize In Thermal Transfer专业生产热转印Specialize in English英语专业specialize in chemistry专修化学Specialize in Law法学专业specialize in making专门生产或专门制作We Specialize In Producing专业生产deal in经营;买卖；经销；沉溺于短语deal somefirst in让某人参加deal someone in让某人参加deal ing in diamonds发牌的动作be engaged in参与；从事于；忙于短语Be Assiduously Engaged In Writing手不停挥to be engaged in表示从事；从事be engaged in politics参与政治事务be engaged in reading忙于读书be engaged in sports参加活动Be Engaged In Agriculture务农be engaged in忙于Be Engaged In Researches从事研究be engaged in something从事某事
