| 单词 | narrow beam |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔LIGHT〕Maggie stumbled across the field with only a narrow beam of light from her flashlight to help her. 玛吉跌跌撞撞地在田野里走，只有她手电筒的一小束光给她照路。朗文写作活用〔ray〕A thin line or narrow beam of light or other radiant energy.光线，放射线：极细的一条或极窄的一束亮光或其它辐射能美国传统〔ruby laser〕A laser that uses a ruby crystal to produce an intense, narrow beam of coherent red light, used in light-transmission communication and for localized heating.红宝石激光器：用红宝石晶体发出密集的连贯的红色细光线的一种激光器，用于炮线传播交流和局部加热美国传统 |
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