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| 1. | The cold "boil-off"gases condense the moisture in the surrounding air, creating a highly visible fog. |
| 低温汽化气体浓缩周围空气里的水份，产生非常显著的雾。 |
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| 2. | They define the area where the vapors are still cold enough to condense the moisture in the air. |
| 雾云不能确定蒸汽云的界限。它们只是界定了水蒸汽仍然冷得足够浓缩空气中的水分的区域。 |
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