Bevern.贝弗bev.有；在；是；到达；拜访be greatly impressed by ...对 ... 印象深刻be under some apprehensions about对 ... 有些担心Be changed into working condition变工况be driven to drastic alternatives逼上梁山be engaged in scientific research搞科学研究工作Be interested in some commodities对商品感兴趣be apprehensive of sb.'s safety甜菜叶蝉Be concerned about material gains关心物质财富的获取be received with great enthusiasm受到热情的接待Beidou navigation and positioning北斗定位