be weak in/at在......弱;
be worth doing 值得做......;
be wrong with 出毛病,不对头;
beatto death 把.....打死;
because of 因为;由于等等。
扩展资料
before long 不久;
beg ones pardon 企求;
beginwith 从......开始;
believe in 信任,信仰;
belong to 属于;
beyond help 不可挽救的';
beyond hope 没有希望的;
blow away 刮走;吹走。