be greater than大于
be greater than or equal to不小于
be inscribed in内接于
be less than小于
be less than or equal to不大于
be parallel to平行于
be perpendicular to垂直于
be substituted for代替
billion10亿
binomial二项式
bisect把……二等分
block立体
blot out涂掉,删掉
bound辩解,范围;邻接
*brand *bulk大量