normal line的用法和樣例：
例句
- The vertical line meets the horizontal one here.
垂直線(xiàn)與水平線(xiàn)在此相交。 - "A science fiction cannot not be regarded as a mere entertainment, but in fact it tells the reader much more."
"科幻小說(shuō)不能簡(jiǎn)單地看成是供消遣的，而實(shí)際上它給讀者展示更深刻的內容。" - This is necessary for normal mapping to work.
這是法線(xiàn)貼圖運作時(shí)所必須的。 - Vertex format includes a vertex normal vector.
頂點(diǎn)格式包括頂點(diǎn)法線(xiàn)向量。
