英文：A discrete part or portion of a work, such as a painting, building, or decorative object, especially when considered in isolation.
中文：細部某項作品（例如繪畫、建築、裝飾）的一部分，尤指這些部分被分開來獨立考慮的部分
英文：Any of several devices that convert incident electromagnetic radiation of mixed frequencies to one or more discrete frequencies of highly amplified and coherent ultraviolet, visible, or infrared radiation.
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