| balance | 余额 |
| bar graph(chart) | 条带图 |
| base | 堤边，地面，幂或乘方的底数 |
| base area | 底面积 |
| be across from | 在···对面 |
| be closet to | 最接近··· |
| be composed of | 由构成 |
| be equal to | 与···相等 |
| be equivalent to anther equation | 与另一方程同解 |
| be fewer than | 小于 |
| 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 |
| billion | 10的九次方 |
| 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 |
| *bulk | 大量 |
