vanishing point

1. N-COUNT The vanishing point is the point in the distance where parallel lines seem to meet. 灭点[usu sing]

The motorway stretched out ahead of me until it narrowed to a vanishing point some miles away. 高速公路在我面前延伸开去，直至在几英里外汇合成一个小点。

2. N-UNCOUNT If you say that something has reached vanishing point, you mean it has become very small or unimportant. 微不足道的程度

By 1973, this gap had narrowed almost to vanishing point. 到1973年，这一差距已缩小到几乎为零。