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| 31. | A plug connects a lamp, radio, television, or iron to an electric circuit. |
| 插头把电灯、收音机、电视机、电熨斗连接在电路上。 |
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| 32. | The refrigerator motor hummed. |
| 电冰箱的发动机发出嗡嗡声。 |
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| 33. | This is a refrigerator of distinction. |
| 这是一台优质电冰箱。 |
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| 34. | The motive power of trains is usually steam or electricity. |
| 火车的动力通常是蒸汽或电。 |
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| 35. | The electrician hooked up the doorbell. |
| 电工装好了门铃。 |
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| 36. | Tuning a radio or television receiver is an example of electrical resonance. |
| 调谐收音机或电视接收机是电共振的例子。 |
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| 37. | This is alternating current. |
| 这就是交流电。 |
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| 38. | There is a possibility of error in the transmission of any code word. |
| 在翻译电码字时有可能发生错误。 |
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| 39. | This potentiality for producing a force is called an electric field. |
| 这种产生电的潜在可能性叫做电 |
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| 40. | The telescreen received and transmitted simultaneously. |
| 电幕能够同时接收和放送。 |
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