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| 51. | The new equipment will reduce the error probability by seven times. |
| 新设备的误差概率将降低七分之六。 |
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| 52. | One trillionth(10-12) of a second. |
| 皮可秒，微微秒万亿分之一秒（10－12） |
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| 53. | One of a trillion equal parts. |
| 一万亿分之一一万亿个相等部分中的一个 |
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| 54. | Presidents have invariably also been Protestants and two-thirds of them have been college graduates. |
| 总统千篇一律是新教徒，而且三分之二是大学毕业生。 |
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| 55. | It is considered accurate to plus or minus3.1 percentage points,19 times out of20. |
| 能够精确到正负3.1个百分点，二十分之十九。 |
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| 56. | The 60 million referred to the working masses, who accounted for 90 per cent of the population in the Southwest. |
| 六千万就是西南地区人口中百分之九十的基本群众， |
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| 57. | We'd better give it an exposure of 1/60 of a second. |
| 我们最好把曝光时间定在六十分之一秒。 |
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| 58. | Over 900 million US dollars of foreign capital was actually utilized, increasing nearly 40% compared with the same period the previous year. |
| 实际使用外资九亿多美元，同比增长近百分之四十。 |
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| 59. | a large wine bottle (holds 4/5 of a gallon). |
| 大的酒瓶（容量是一加仑的五分之四）。 |
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| 60. | Irritant. May be a reproductive hazard. Typical PEL100 ppm. |
| 刺激性.可能是一个生殖危害.典型贝利百万分之一百. |
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