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11. | 2003年7月31日准备观看英仙座流星雨的时间到了。 |
| It is time to get ready for the Perseid meteor shower. |
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12. | exposure to too much light or for too long a time. |
| 过度或过长时间的曝光。 |
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13. | To expose(film)to light for too short a time or to light or radiation insufficient to produce normal image contrast. |
| 曝光不足(底片)曝光时间太短或光线太弱无法制造正常图像反差 |
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14. | the act of exposing film to too little light or for too short a time. |
| 胶卷曝光的光线不足或者时间太短。 |
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15. | Manual exposure camera all have build in light meter which tell you exactly what exposure you have to set. |
| 手动曝光相机都装有曝光表,说明应设定多少曝光时间。 |
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16. | exposure of a film for a relatively long time (more than half a second). |
| 胶卷曝光时间相对较长(超过半秒钟)。 |
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17. | Manual exposure camera all had build-in light meter which tell you exactly what exposure you had to set. |
| 手动曝光相机都装有曝光表,说明应设定多少曝光时间。 |
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18. | One will choose an exposure time which is a good compromise between the times required for the blue and the red rays. |
| 可以选择一个介于红光和蓝光所需要的曝光时间之间的折衷值作为曝光时间。 |
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19. | Manual exposure cameras all have built-in light meters which tell you exactly what exposure you have to set. |
| 手动曝光相机都装有曝光表,说明应设定多少曝光时间。 |
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20. | An exposure of one hundredth of a second will is enough. |
| 百分之一秒的曝光时间就足够了。 |
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