| 1. | It is now unlawful for factories to emit black smoke into the air. |
| 工厂向大气中排放黑烟在现在是违法的。
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| 2. | emit [give, let out, utter] moans. |
| 发出呻吟声。
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| 3. | This is a major achievement because, in relative terms, planets are very small and old not emit light. |
| 这是一个重要的成就，因为相对来说，行星很小，而且也不发光。
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| 4. | It has been found that certain bats emit squeaks and by receiving the echoes, they can locate and steer clear of obstacles -- or locate flying insects on which they feed. |
| 人们发现，某些蝙蝠能发出尖叫声，并能通过回声来确定并躲开障碍物，或找到它们赖以为生的昆虫。
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| 5. | emit , give off a pungent odour |
| 发出辛辣的气味
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| 6. | emit [shed] beam |
| 发光
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| 7. | dart [ emit ] envy from her eyes |
| 她的眼睛里射出妒忌（羡慕）的目光
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| 8. | emit [send forth, send out ,shed] rays |
| 放射出光
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| 9. | emit radioactivity |
| 放射出射线
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| 10. | emit murmurs |
| 发出轻轻的声音
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