Parallel lines are lines that never join.

平行线是永不相交的线。

There are two parallel lines.

这有两平行线。

Parallel lines are, by definition, lines on the same plane that never join.

按照定义说, 平行线是在同一平面上永不相交的线。

Zollner's illusion makes parallel lines seem to diverge by placing them on a zigzag-striped background.

将平行线置于锯纹背上，左会让平行线看起来不平行。

An equalarea pseudo cylindrical projection gather is constructed, in which the longitudes are hyperbola being symmetrical to the central meridian and the latitudes are parallel lines.

摘要构建了一个纬线表象为平行于赤道的直线，经线表象为对称于中央直经线的双曲线，且面积没有变的投影集合，并得到一组概括公式。

Parallel lines are lines that never join.

平行线是永不相交的线。

There are two parallel lines.

这有两条平行线。

Parallel lines are, by definition, lines on the same plane that never join.

按照定义说, 平行线是在同一平面上永不相交的线。

Zollner's illusion makes parallel lines seem to diverge by placing them on a zigzag-striped background.

将平行线置形条纹背上，左氏错平行线看起来不平行。

An equalarea pseudo cylindrical projection gather is constructed, in which the longitudes are hyperbola being symmetrical to the central meridian and the latitudes are parallel lines.

摘要构建了一个纬线表象为平行赤道的直线，经线表象为对称中央直经线的双曲线，且面积没有变形的投影集合，并得到一组概括公式。

Parallel lines are lines that never join.

平永不相交的。

There are two parallel lines.

这有两条平。

Parallel lines are, by definition, lines on the same plane that never join.

按照定义说, 平在同一平面上永不相交的。

Zollner's illusion makes parallel lines seem to diverge by placing them on a zigzag-striped background.

将平置于锯齿形条纹背上，左氏错觉会让平看起来不平。

An equalarea pseudo cylindrical projection gather is constructed, in which the longitudes are hyperbola being symmetrical to the central meridian and the latitudes are parallel lines.

摘要构建了一个纬表象为平于赤道的，表象为对称于中央的双曲，且面积没有变形的投影集合，并得到一组概括公式。

Parallel lines are lines that never join.

平行是永不相交的。

There are two parallel lines.

这有平行。

Parallel lines are, by definition, lines on the same plane that never join.

按照定义说, 平行是在同一平面上永不相交的。

Zollner's illusion makes parallel lines seem to diverge by placing them on a zigzag-striped background.

将平行置于锯齿形纹背上，左氏错觉会让平行看起来不平行。

An equalarea pseudo cylindrical projection gather is constructed, in which the longitudes are hyperbola being symmetrical to the central meridian and the latitudes are parallel lines.

摘要构建了一个纬象为平行于赤道的直，象为对称于中央直的双曲，且面积没有变形的投影集合，并得到一组概括公式。

Parallel lines are lines that never join.

线是永不相交线。

There are two parallel lines.

这有两条线。

Parallel lines are, by definition, lines on the same plane that never join.

按照定义说, 线是在同一面上永不相交线。

Zollner's illusion makes parallel lines seem to diverge by placing them on a zigzag-striped background.

将线置于锯齿条纹背上，左氏错觉会让线看起来不。

An equalarea pseudo cylindrical projection gather is constructed, in which the longitudes are hyperbola being symmetrical to the central meridian and the latitudes are parallel lines.

摘要构建了一个纬线表象为于赤道线，经线表象为对称于中央经线双曲线，且面积没有变影集合，并得到一组概括公式。

Parallel lines are lines that never join.

平行线是永不相交的线。

There are two parallel lines.

这有两条平行线。

Parallel lines are, by definition, lines on the same plane that never join.

按照定义说, 平行线是在同一平面永不相交的线。

Zollner's illusion makes parallel lines seem to diverge by placing them on a zigzag-striped background.

将平行线置于锯齿形条，氏错觉会让平行线看起来不平行。

An equalarea pseudo cylindrical projection gather is constructed, in which the longitudes are hyperbola being symmetrical to the central meridian and the latitudes are parallel lines.

摘要构建了一个纬线表象为平行于赤道的直线，经线表象为对称于中央直经线的双曲线，且面积没有变形的投影集合，并得到一组概括公式。

Parallel lines are lines that never join.

平行线是永不相交的线。

There are two parallel lines.

这有两条平行线。

Parallel lines are, by definition, lines on the same plane that never join.

按照定义说, 平行线是在同一平面上永不相交的线。

Zollner's illusion makes parallel lines seem to diverge by placing them on a zigzag-striped background.

将平行线置于条纹背上，左氏让平行线看起来不平行。

An equalarea pseudo cylindrical projection gather is constructed, in which the longitudes are hyperbola being symmetrical to the central meridian and the latitudes are parallel lines.

摘要构建了一个纬线表象为平行于赤道的直线，经线表象为对称于中央直经线的双曲线，且面积没有变的投影集合，并得到一组概括公式。

Parallel lines are lines that never join.

平是永不相交。

There are two parallel lines.

这有两条平。

Parallel lines are, by definition, lines on the same plane that never join.

照定义说, 平是在同一平面上永不相交。

Zollner's illusion makes parallel lines seem to diverge by placing them on a zigzag-striped background.

将平置于锯齿形条纹背上，左氏错觉会让平看起来不平。

An equalarea pseudo cylindrical projection gather is constructed, in which the longitudes are hyperbola being symmetrical to the central meridian and the latitudes are parallel lines.

摘要构建了一个纬表象为平于赤，经表象为对称于中央经双曲，且面积没有变形投影集合，并得到一组概括公式。

Parallel lines are lines that never join.

行是永相。

There are two parallel lines.

这有两条行。

Parallel lines are, by definition, lines on the same plane that never join.

按照定义说, 行是在同一面上永相。

Zollner's illusion makes parallel lines seem to diverge by placing them on a zigzag-striped background.

将行置于锯齿形条纹背上，左氏错觉会让行看起行。

An equalarea pseudo cylindrical projection gather is constructed, in which the longitudes are hyperbola being symmetrical to the central meridian and the latitudes are parallel lines.

摘要构建了一个纬表象为行于赤道直，经表象为对称于中央直经双曲，且面积没有变形投影集合，并得到一组概括公式。