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、法、求积仪法。

Parallel lines are lines that never join.

是永不相交的。

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的。

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

将置于锯齿形条纹背景上，左氏错觉会让起来不。

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.

目前常用的积方法有方格纸法、线法、求积仪法。

Parallel lines are lines that never join.

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, 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.

将线置于锯齿形纹背景上，左氏错觉会让线看起来不。

There are two parallel lines.

这有两线。

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、法、求积仪法。

Parallel lines are lines that never join.

是永不相交的。

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的。

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

将置于锯齿形条纹背景上，左氏错觉会让起来不。

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。

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.

平行线永的线。

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

按照定义说, 平行线一平上永的线。

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。

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、求积仪法。

Parallel lines are lines that never join.

行线是不相交的线。

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，左氏错觉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。