| 1. | They are now referred to by letters .
它们现在就用字母来表示。 |
| 2. | Bold type is often used for vectors .
黑体字常用来表示向量。 |
| 3. | The operation of summing is represented by the nodes .
求和的运算是通过节点来表示的。 |
| 4. | Did the boss do anything else to show his thanks ?
老板有没有做其它的事来表示他的谢意？ |
| 5. | Often agricultural earnings cannot easily be quantified .
农业收入经常很难用数量来表示。 |
| 6. | A vector is defined by a direction as well as a magnitude .
一个矢量要用大小和方向来表示。 |
| 7. | The word to describe her conduct was masterful .
她的举止可以用这样的词儿来表示：老练专横。 |
| 8. | This is best expressed in the form of an equilibrium constant .
这最好用平衡常数的形式来表示。 |
| 9. | Frequently, a bar over a number is used instead of the not .
通常，用在数上加一横来表示“非”。 |
| 10. | Growth can be represented by a linear or log linear trend .
增长可以用线性或对数线性趋势来表示。 |
