BEPS北部生态系统生产力模拟模型（BEPS）bev.有；在；是；到达；拜访Bezymenski别济缅斯基be falling下跌Bessonneau贝索诺bepheninum苄酚宁besiegment围困,围攻be busy atadj.忙于be hurting处于困境be seat at坐在 ... 上be trapped陷入困境, 被困住be suspect犯疑