Graph paper, parallel, and planimeter methods are current tools for acreage calculation.

目前常用的量算积方法有方格纸法、行线法、求积法。

Parallel lines are lines that never join.

行线是永不相交的线。

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

按照定义说, 行线是在同一上永不相交的线。

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

将行线置于锯齿形条纹背景上，左会让行线看起来不行。

There are two parallel lines.

这有两条行线。

Graph paper, parallel, and planimeter methods are current tools for acreage calculation.

目前常用的量算积方法有方格纸法、平行线法、求积仪法。

Parallel lines are lines that never join.

平行线是永不相交的线。

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.

将平行线置于锯齿形条纹背景上，左氏错觉会让平行线看起来不平行。

There are two parallel lines.

这有两条平行线。

Graph paper, parallel, and planimeter methods are current tools for acreage calculation.

目前常用的量算积方法有方格纸法、平行线法、求积仪法。

Parallel lines are lines that never join.

平行线相交的线。

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

按照定义说, 平行线在同一平上相交的线。

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上，左氏错觉会让平行线看起来平行。

There are two parallel lines.

这有两条平行线。

Graph paper, parallel, and planimeter methods are current tools for acreage calculation.

目前常用的量算积方法有方格法、行线法、求积仪法。

Parallel lines are lines that never join.

行线是永不相交的线。

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

按照定义说, 行线是在同一上永不相交的线。

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

将行线置于锯齿形条纹背景上，左氏错觉会让行线不行。

There are two parallel lines.

这有两条行线。

Graph paper, parallel, and planimeter methods are current tools for acreage calculation.

目前常用的量算方法有方格纸法、平行线法、法。

Parallel lines are lines that never join.

平行线是永不相交的线。

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.

将平行线置于锯齿形条纹背景上，左氏错平行线看起来不平行。

There are two parallel lines.

这有两条平行线。

Graph paper, parallel, and planimeter methods are current tools for acreage calculation.

目前常用的量算积方法有方格纸法、平行线法、求积仪法。

Parallel lines are lines that never join.

平行线是永不相交的线。

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.

将平行线置于锯齿形条纹背景上，左氏错觉会让平行线看起来不平行。

There are two parallel lines.

这有两条平行线。

Graph paper, parallel, and planimeter methods are current tools for acreage calculation.

目前常用量算积方法有方格纸法、平行法、求积仪法。

Parallel lines are lines that never join.

平行是永不相交。

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

照定义说, 平行是在同一平上永不相交。

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

将平行置形条纹背景上，左氏错觉会让平行看起来不平行。

There are two parallel lines.

这有两条平行。

Graph paper, parallel, and planimeter methods are current tools for acreage calculation.

目前常用量算积方法有方格纸法、法、求积仪法。

Parallel lines are lines that never join.

是永不相交。

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

按照定义说, 是在同一上永不相交。

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

置于锯齿形条纹背景上，左氏错觉会让看起来不。

There are two parallel lines.

这有两条。

Graph paper, parallel, and planimeter methods are current tools for acreage calculation.

目前常用的量算积方法有方格纸法、平行线法、求积仪法。

Parallel lines are lines that never join.

平行线是交的线。

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

按照定义说, 平行线是平上交的线。

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纹背景上，左氏错觉会让平行线看起来平行。

There are two parallel lines.

这有两条平行线。