| 单词 | plane mirror |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔virtual focus〕The point from which divergent rays of reflected or refracted light seem to have emanated, as from the image of a point in a plane mirror.虚焦点：似乎发出分散的反射光线或折射光线的点，如同从平面镜的一像点发出一般美国传统〔virtual image〕An image from which rays of reflected or refracted light appear to diverge, as from an image seen in a plane mirror.虚像：反射或折射光线从其分散的像，如在平面镜中看到的像美国传统 |
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