In a horizontally symmetrical flag, the bottom half of the blue square is a mirror image of the top half.
而在水平对称的星条旗中，蓝色方形区域下半部为上半部的景象。
2
Most other fish have tails that are essentially symmetrical from top to bottom.
其他鱼的尾巴基本上都是从上到下对称的。
3
In considering the traditional scheme, note from the illustration at the top of the page how the planetary rulerships fan out in a symmetrical pattern from the union of the Sun and Moon.