| 1. | Edison had invented the phonograph .
爱迪生发明了留声机。 |
| 2. | Who invented the zip-fastener ?
谁发明了拉链？ |
| 3. | For this we developed two new devices, rockets and aerial mines .
因此，我们便发明了两种新武器火箭和空中布雷。 |
| 4. | Man gradually invented devices to extend his experimental capabilities .
人类逐步发明了一些装置来增加他们的实验能力。 |
| 5. | After he invented the new drilling machine , honors were thrust upon him .
他发明了新的钻机之后，许多荣耀都加在他的身上了。 |
| 6. | Man invented writing to spatialize , i.e. preserve language .
人类发明了文字，才能给予语言以形态，也就是说，才能把语言保存下来。 |
| 7. | In 1642 pascal invented a computing machine that handled addition by carrying from units to tens .
1642年，Pascal发明了能从个位进到十位的加法计算机。 |
| 8. | While working on a means of reducing amplifier distortion, he devised the negative feedback amplifier .
在研究减少放大器失真方法时他发明了负反馈放大器。 |
| 9. | Over the centuries man has developed drugs that could cure or alleviate illness and suffering .
许多世纪以来，人类发明了可以治愈或减轻疾病与痛苦的药物。 |
| 10. | The problem was not solved completely until the invention of the marine chronometer in the eighteenth century .
这个问题直到十八世纪发明了航海经线仪才得以解决。 |
