| 1. | He was busy , therefore he could n't come . 他忙得很,所以没有来。 |
| 2. | They are fond of fun and therefore witty . 他们喜欢玩笑,所以情趣横生。 |
| 3. | The sliver must therefore be attenuated . 因此,必须要拉细条子。 |
| 4. | I was ill, and therefore could not come . 我病了,所以未能来。 |
| 5. | An arrangement was therefore necessarily made . 这一来就必须做出一种安排。 |
| 6. | Charts should therefore be printed on tough paper . 海图应以耐磨的纸张印刷。 |
| 7. | We can therefore disconnect this bond(5a) . 我们于是可以把这个键(5a)切断。 |
| 8. | Wealthy landowners are therefore as a rule exempted . 有钱的地主一般都免税。 |
| 9. | The vertical axis is therefore called the imaginary axis . 因而纵轴称为虚轴。 |
| 10. | Therefore the government there must be suppressed . 因此,必须取缔那里的政府。 |