reference point 托福

Ambitious future observers might also send out probes that escape the supergalaxy and could serve as reference points for detecting a possible cosmic expansion.

有企图心观测者，或许会发射一些能够脱离超级星系探测器，做为侦测宇宙胀参考。

In this paper circular uncoded targets and coded targets are used as reference points, and an algorithm of automatic reference point detection is proposed.

文中采用圆形目及编码元素作为，并提出一种自动检测算法。