在中间层，可移植的图形引擎提供对线的绘制、区域的填充、多边形、裁剪以及颜色模型的支持。

At the middle level, a portable graphics engine provides support for line draws, area fills, polygons, clipping, and color models.

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她说船将被制成胶囊形，由一个小型核动力引擎驱动，尽管不会有帆，但船上会有一个固定照相机的桅杆。

She says the boat would be shaped like a capsule, powered by a small nuclear engine, and though there would be no sail, it would have a mast to hold a camera.

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下图是波音的概念图，它也使用了V形的双尾部，与洛克西德的飞机一样，它也把引擎安置在机翼上部。

The Boeing concept, below, also USES a V-shaped twinned tail section, and like the Lockheed jet, it also places the engines on top of the wings.

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下图是波音的概念图，它也使用了V形的双尾部，与洛克西德的飞机一样，它也把引擎安置在机翼上部。

The Boeing concept, below, also USES a V-shaped twinned tail section, and like the Lockheed jet, it also places the engines on top of the wings.

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