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| 1. | having or employing wavelengths longer than light but shorter than radio waves; lying outside the visible |
| 有或使用波长长于可见光但是短于无线电的电波；处于可观察的红光范围之外。 |
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| 2. | having or employing wavelengths shorter than light but longer than X-rays; lying outside the visible |
| 有或使用短于可见光但是长于x光的波长；处于可观察的紫光范围之外。 |
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