您要查找的是不是：
- Some stars are invisible to the naked eye. 有些星体肉眼是看不见的。
- He remains invisible when out of spirits. 闷闷不乐时，他不露面。
- Germs are invisible to the naked eye. 细菌用肉眼看不见。
- The gun can fire invisible rays. 这枪能发出看不见的射线。
- The mends were almost invisible. 修补过的地方几乎看不出来。
- That comet is invisible to the unaided eye. 那颗彗星只用肉眼是看不到的。
- The differences are almost invisible. 这些差别简直难以辨认。
- The survey covered a broad spectrum of topic. 这本简史涉及的话题范围很广。
- She was invisible in the dusk of the room. 她在昏暗的房间里别人看不到她。
- invisible spectra [医] 不可见光谱
- They could look at the spectra of the light the moons reflected. 他们可以观察月亮反射的光的光谱。
- Invis fade time down to 5 seconds. 隐形减至5秒。
- Red and violet are at opposite ends of the spectrum. 红色和紫色位于光谱相对的两端。
- There's a wide spectrum of opinions on this problem. 对这个问题的说法众说纷纭，莫衷一是。
- In the spectrum, distinct colours shade into each other. 在光谱中，截然不同的颜色相互融合起来。
- The invisible infrared spectrum is also sensed by the multispectral scanner. 看不见的红外光谱也能被多光谱扫描器辨出。
- The larger atoms have much more complex spectra. 较重的原子具有较复杂的光谱线。
- There is a wide spectrum of opinions on this question. 在这个问题上有著各种不同的意见。
- invisible spectrum 不可见光谱
- Bacteria is something invisible to the eye. 细菌是肉眼看不见的东西。
