be burned out住所被烧光
be busy with忙于
be careful of爱惜,注意
be born of出生于
be buried in沉思,陷入,专心于
be busy忙着
be busy about忙于
be bent on热恋于,一心想
be better off处境较好,情况好转
be born in出生于
be bound to一定会,不得不
be capable of能够
be characterized by以为特征
be combined with与结合
be concerned about关心,挂念
be coupled with与配合
be crowded with挤满,拥塞
be dependent on/upon取决于,依赖
be careful to务必注意
be certain to一定,必然
be confident in对有信心
be abundant in富于,富有
be acquainted with与相识,熟悉
be afraid of恐怕,害怕,担忧
be angry at因某事生气
be anxious about担心,为担忧
be anxious to渴望
be aware of意识到
be bad at拙于,不善于
be based on根据,以为基础
be beside oneself忘乎所以
be badly off生活穷困
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