gre必考词汇:obviate
obviate:v.1.排除,消除2.避免,使成为不必要 1)topreventormakeunnecessarythroughanticipation Ourcarefulpreparationsforthemoveobviatedtheexpenseofhavingthemovershelpuspack. Theriverwasshallowenoughtowadeacrossatmanypoints,ehichobviatedtheneedforabridge. Synonyms:aver...