Beko贝科
bev.有;在;是;到达;拜访
be located north of位于 ... 以北
be perpendicular toconj.垂直于
be in the ascendantadj.在临死时(临终时)
be killed in action阵亡
Becterial endotoxin细菌内毒素
be out on one's ear
be on guard against警惕
be the very spit of和, 极象
be up on one's legs
be stiff in manners态度生硬