Parallel lines are lines that never join.

是永不相。

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

按照定义说, 是在同一面上永不相。

Oxford Road joins the High Street at an angle of ninety degrees.

牛津路与该大街垂直相。

Line A crosses line B at right angles.

A与B成直角相。

The lines AB and CD intersect at E.

直AB与直CD相于E点。

The line AB intersects the line CD at O.

直AB与直CD相于O点上。

The course which will cut each meridian at the same angle is termed a rhumb line.

与每一子午相成同一角向叫恒向。

The two edges met flush.

两个边缘相齐。

In the amity I speak of,they intermix and confound themselves one in the other,with so universal a commixture,that they weave out and can no more find the seam that has conjoined them together.

在我所说友谊中，心灵相互融，不分彼此，甚至连相连接点都找不到。