Put a magnifier under the sun and you will find a dazzling bright spot under the magnifier.

把放大镜置于阳光下，放大镜下面会形成一个耀眼夺目的光斑即焦点。

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Put a magnifier under the sun and you will find a dazzling bright spot under the magnifier.

把放大镜置于阳光下，放大镜下面会形成一个耀眼夺目的光斑即焦点。

youdao