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| 71. | That's how the clock runs, by the pendulum moving from one extreme to the other. |
| 时钟的工作就是依靠钟摆从一个极端摆向另一个极端。 |
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| 72. | the weight, sometimes a piece of lead, attached to a plumb line; a sinker; a plummet |
| 铅坠 |
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| 73. | If the power plant is too far below the rotor disc, there will be a discernable pendulum effect. |
| 如果电厂是过分低于转子盘,将有可辨的钟摆效应. |
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| 74. | Hot weather heats the rod; So in summer, the clock will go more slowly. It will lost time. |
| 热天会使摆杆受热，所以夏天钟摆走得慢，钟就走得慢了。 |
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| 75. | By keeping this center of mass closer to the rotor disc the pendulum effect is reduced and the helicopter is markedly more stable. |
| 保持这种质心接近转子盘钟摆效应明显降低,直升机更稳定. |
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| 76. | a hypothetical pendulum suspended by a weightless frictionless thread of constant length. |
| 悬浮在一定长度的无摩擦力的细丝上的假定钟摆。 |
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| 77. | Mind has a way of moving like a pendulum, from one extreme to the other. |
| 头脑的运动方式就像钟摆，从一个极端摆向另一个极端。 |
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| 78. | Here the pendulum is ticking; it does not care, it has no pity. |
| 你看，钟摆还在滴答作响，它什么都不管，什么人也不怜恤。 |
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| 79. | If we want the clock to go faster, we make the pendulum shorter, we call the weight at the bottom the bob. |
| 如果我们想让钟走得快一点，我们就把钟摆弄得短一点。 |
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| 80. | He responded to these gestures of love by swinging his busy tail like a pendulum. |
| 他则像个钟摆似的频繁摇着尾巴回应她爱的表示。 |
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